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Bateria
Bateria de lítio / chumbo com longa vida útil de capacidade total, células de bateria para sistema solar, sistema de energia eólica, sistema de armazenamento de energia móvel, reserva de energia de emergência, estação de energia etc. manutenção gratuita
Sistema solar
Padrão / Personalizado híbrido, na rede, fora da rede kits de sistema solar. Soluções completas para Projetos comerciais e residenciais. Economizando seu tempo e custo para reunir outros componentes do sistema.
Bateria
Bateria
Bateria de lítio / chumbo com longa vida útil de capacidade total, células de bateria para sistema solar, sistema de energia eólica, sistema de armazenamento de energia móvel, reserva de energia de emergência, estação de energia etc. manutenção gratuita
Sistema solar
Sistema solar
Padrão / Personalizado híbrido, na rede, fora da rede kits de sistema solar. Soluções completas para Projetos comerciais e residenciais. Economizando seu tempo e custo para reunir outros componentes do sistema.
Sobre nós
Sobre Sweet Power
Xiamen Sweet Power Tech Co., Ltd. é fornecedora profissional de soluções de sistema solar há mais de 10 anos. Oferecemos um serviço completo em kits de sistema de energia solar, incluindo sistema de armazenamento de energia de bateria de ácido / chumbo / lítio na rede, fora da rede, híbrido, com suporte abrangente desde a avaliação do projeto, pré-design, desenhos do sistema de montagem até o guia de instalação, de um único produto para completar os kits do sistema pv. Além disso, temos nossa própria engenharia e equipe R & D, customizados, OEM, ODM estão todos disponíveis para atender aos seus requisitos de projetos diferentes. É nosso valor apoiar nossos clientes com produtos de alta qualidade e sistemas de longa vida útil de alto desempenho. Todos os nossos produtos têm garantia de liderança na indústria com todos os tipos de certificados. Estamos ansiosos para cooperar com você, juntos para tornar o mundo verde.
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Xiamen Sweet Power Tech Co., Ltd. é um fabricante líder de produtos de energia solar e soluções de serviço. Serviço principal, incluindo inversores solares, inversores solares híbridos
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Take customers to visit the battery cell source factory
Jan 29, 2023 Take customers to visit the battery cell source factory
#outlook a { padding: 0; } .ReadMsgBody { width: 100%; } .ExternalClass { width: 100%; } .ExternalClass * { line-height:100%; } body { margin: 0; padding: 0; -webkit-text-size-adjust: 100%; -ms-text-size-adjust: 100%;} table, td { border-collapse:collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; } img { border: 0; height: auto; line-height: 100%; outline: none; text-decoration: none; -ms-interpolation-mode: bicubic; } p { display: block; margin: 0; } .hide_on_mobile { display: none !important;} @media only screen and (min-width: 480px) { .hide_on_mobile { display: table-row !important;} } [owa] .mj-column-per-100 { width:100%!important; } [owa] .mj-column-per-60 { width:60%!important; } [owa] .mj-column-per-50 { width:50%!important; } [owa] .mj-column-per-40 { width:40%!important; } [owa] .mj-column-per-33 { width:33.333333%!important; } [owa] .mj-column-per-25 { width:25%!important; } .mj-column-per-100 { width:100%;} .mj-column-per-60 { width:60%; } .mj-column-per-50 { width:50%; } .mj-column-per-40 { width:40%; } .mj-column-per-33 { width:33.333333%; } .mj-column-per-25 { width:25%; } On January 17, 2024, we are honored to invite our Swedish customers to visit the company and factory. Booking This visit is divided into three parts: meeting-factory visit-battery cell factory visit First part-Meeting The meeting mainly communicated the details of the product, as well as the questions and different opinions of both parties on the progress of the project. There are further plans for future cooperation between the two parties, including the prospects for cooperation between the two parties in the next 3-5 years. Second part-Factory visit After the meeting, we invited the customer to visit our factory and demonstrate our production process and technology to the customer. Introduced some of our main products to customers. Demonstrates the entire process of the solar system. Visited the battery production line and solar panel production line. Third part-Battery cell factory visit On the second day of the customer's visit, we invited the customer to visit the source factory of the battery cell brand we cooperated with, introduced the long history of the brand, and introduced the complete battery production process to the customer, as well as various tests of the battery cells. Including high temperature testing and so on. During this visit, we also reached new cooperation with our customers. BOOK IT NOW!
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What are the benefits of photovoltaic elderly care?
Mar 28, 2024 What are the benefits of photovoltaic elderly care?
Photovoltaic elderly care is a new type of elderly care model. "People's Daily" has long recommended the "photovoltaic elderly care" model. This report published in December 2015 described it this way: "Most people in the village invest in rooftop power stations with For elderly care, rooftop power stations have low investment, low risk, and stable income." Village Party Secretary Jiang Hongliang pointed out the reason in one sentence. In fact, the construction of household photovoltaic power stations can be regarded as an investment behavior, with a rate of return of more than 10%! Nowadays, the country is vigorously supporting distributed photovoltaics. Most areas in our country can pay back their costs in a few years. Areas with strong local subsidies will have even shorter time to pay back their costs. The remaining ten years of power generation income will be a steady collection of money. What are the benefits of photovoltaic elderly care? Utilizing idle resources, the elderly do not need to work Home distributed use uses the idle roof resources of the home to install photovoltaic power stations to convert solar energy into electrical energy. As long as it is installed and connected to the grid, you can immediately gain income and enjoy national and local photovoltaic subsidies. It can be said that by lying on the roof and basking in the sun, photovoltaic modules can generate real income every day. With this small vault on the roof, parents no longer have to go to the fields to farm, they can easily reap the benefits of sunlight and retire at home with peace of mind!   Small investment and high returns In most areas of my country, the payback time is 6 to 8 years. In areas with strong local subsidies, the cost can be recovered in less than 5 years, and the income from power generation in the remaining ten years will be collected steadily! Warm in winter and cool in summer to save electricity bills Actual cases show that household photovoltaic power stations on the roof have a certain thermal insulation effect. In summer, the indoor temperature of a photovoltaic roof can be reduced by 3 to 5 degrees. While the indoor temperature is controlled, the energy consumption of the air conditioner can also be significantly reduced!   Not subject to geographical restrictions on resource distribution Solar photovoltaics are not restricted by the geographical distribution of resources. As long as there is sunshine, you can install a home photovoltaic power station. It has a wide range of uses in China and is suitable for various areas in my country, especially remote areas without electricity and areas with complex terrain. It can solve the problem of empty-nest elderly care in most areas of my country.It is precisely because of these advantages that photovoltaic power plants are currently widely promoted in rural areas and have become a new choice for elderly people in rural areas.  
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Analysis and prospects of new energy storage technology routes
Mar 26, 2024 Analysis and prospects of new energy storage technology routes
Content source: ESPlaza long-term energy storage network Achieving carbon peak carbon neutrality and striving to build a clean, low-carbon, safe and efficient energy system are major decisions and arrangements made by the Party Central Committee and the State Council. New energy storage is an important support to help achieve the "double carbon" goal, an important means to ensure the security of energy supply, a key element in building a new power system, and an important direction for cultivating strategic emerging industries, with broad development prospects. This article aims to analyze and compare the technical characteristics and application scenarios of the main technical routes of new energy storage, and on this basis, forecast the future development trend of new energy storage. 1 Overview of new energy storage development The development history of energy storage technology can be traced back to the early 19th century, when people began to explore methods of converting electrical energy into chemical energy, thermal energy and other forms for storage. It was not until the early 20th century that electrochemical energy storage technology represented by lead-acid batteries began to become popular, providing a reliable means for energy storage and utilization. With the advancement of science and technology and the application of new materials, energy storage technology has been constantly innovated and improved. New electrochemical energy storage technology represented by lithium-ion batteries has emerged. Its advantages such as high energy density, long life, environmental protection and no pollution have been favored by It has been widely recognized and has become the current mainstream energy storage technology. Although the scale of new energy storage installed capacity is growing rapidly, the development of new energy storage still faces problems such as high costs, lack of a price mechanism, imperfect standards and regulations, and difficulty in project implementation. 2 Main technical routes for new energy storage New energy storage mainly includes three major technical paths: electricity storage (electrochemical energy storage, mechanical energy storage, and electromagnetic energy storage), hydrogen storage, and heat storage. Compared with pumped hydro energy storage, new energy storage has the advantages of short construction period, simple and flexible site selection, and strong adjustment capabilities. It is better matched with new energy development and consumption, and its advantages are gradually becoming more and more prominent. 2.1 Electricity storage Electricity storage can be divided into three categories: electrochemical energy storage, mechanical energy storage and electromagnetic energy storage. Electrochemical energy storage mainly includes lithium-ion batteries, flow batteries, lead-acid batteries and sodium-ion batteries; mechanical energy storage mainly includes compressed air energy storage, flywheel energy storage ...
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Neighbors suspect that photovoltaic modules have light pollution? Here comes the expert explanation!
Mar 22, 2024 Neighbors suspect that photovoltaic modules have light pollution? Here comes the expert explanation!
     Mr. Li, who lives in Fujian, wants to install a set of photovoltaic power stations in his home, and wants to realize that electricity does not cost money, but can also generate electricity to make money, should be happy, but let him worry, why is this? It turns out that the neighbors come over every three and a half times to pass on the information: photovoltaic modules have light pollution, which will affect the surrounding neighbors.      Later, Mr. Li found a local industry expert and got a professional answer, only to know that the truth is not like the neighbors said. So, is there light pollution in the photovoltaic module? Will it affect People's Daily lives? 01 Light pollution      Light pollution is a new environmental pollution source after waste gas, waste water, waste residue and noise pollution, which mainly includes white pollution, artificial day pollution and color pollution. In daily life, people's common light pollution is mostly caused by the vertigo of pedestrians and drivers caused by the reflection of mirror buildings, and the discomfort caused by unreasonable lighting at night. 02 Glare      Glare refers to a visual condition that causes visual discomfort and reduces the visibility of objects due to inappropriate brightness distribution or extreme brightness contrast in space or time in the field of view. Glare can be divided into direct glare and reflected glare, and reflected glare is directly related to the reflectivity of the target object. 03 Comparison of reflectance of solar photovoltaic  modules with that of common surface objects      Photovoltaic module is the core equipment for photoelectric conversion in the process of solar photovoltaic power generation. In order to improve the conversion efficiency, the surface of the glass cover plate used in the production process of the module is generally suede-treated and coated with anti-reflection film, and the surface of the silicon is textured and anti-reflection film, which has achieved the increase of the transmission rate of the glass cover plate and the absorption rate of the crystalline silicon. The surface of the photovoltaic module is tempered glass, the surface is not mirror, there will be only slight diffuse reflection, and there is no light pollution.      In fact, the visible light reflection coefficient of ordinary tempered glass is 9% to 11%, which will not cause light pollution, and the BIPV component uses the same type of glass as the building, which will not cause light pollution. The source of light pollution is visible light, and the internal power generation unit battery of the BIPV module will absorb visible light and convert it into electricity, which will further reduce the reflection of visible light. So photovoltaic power generation system is no light pollution.
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What determines the amount of electricity generated by a rooftop power station?
Mar 21, 2024 What determines the amount of electricity generated by a rooftop power station?
For photovoltaic power stations, every additional kilowatt hour of electricity generated means more revenue per kilowatt hour of electricity. Many people believe that photovoltaic power stations of the same size should have the same power generation capacity. In fact, there are many determining factors. Lighting and environmental impact in the area Photovoltaic power stations rely on solar radiation to generate electricity. The greater the intensity of solar radiation, the higher the power generation capacity of the photovoltaic power station. Data show that more than 2/3 of the regions in my country have more than 2,000 hours of sunshine per year and are rich in solar energy resources. Depending on the latitude and the amount of solar radiation, the power generation capacity of the photovoltaic power station is determined. In addition to differences in solar energy resources, the humidity and temperature in various regions will affect the power generation of photovoltaic power stations. In particular, particulate matter in air pollution, also known as smog, can reduce photovoltaic power generation efficiency by more than 17%. According to calculations, in hazy cities, the power generation of photovoltaic power stations is obviously low. And when the haze is severe, photovoltaic power stations cannot even generate electricity. Quality factors of photovoltaic power plants Environmental problems are difficult to change, but a high-quality photovoltaic power station will definitely generate more electricity than a low-quality power station. Various devices, from silicon materials to components, and from components to inverters, all play a decisive role in power generation. Photovoltaic module quality As the core component of a photovoltaic power station, the quality of photovoltaic modules plays a decisive role in the power generation capacity of the power station. The quality of photovoltaic modules is ultimately linked to their service life and efficiency. First of all, the photoelectric conversion efficiency of photovoltaic modules represents the power generation capacity of the module, so the higher the efficiency of the module, the higher the power generation capacity of the power station. In addition to efficiency, the quality of photovoltaic modules is more reflected in various aspects such as anti-attenuation and anti-aging. Inferior photovoltaic modules are prone to problems such as cracks and backplane aging. Once such problems occur, the efficiency of the photovoltaic modules will drop significantly, resulting in low power generation of the power station. What's more, it is also very important that many power station users do not understand the operating principles of photovoltaic power stations and use them as boards to dry things, such as quilts, shoes, dried food, and peppers... This will block the components and affect the conversion of solar energy into current. If it is small, it will reduce the income of power generation; if it is ...
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From Jan. to Feb. 2024, exports of lithium iron phosphate batteries exceeded 40%
Mar 19, 2024 From Jan. to Feb. 2024, exports of lithium iron phosphate batteries exceeded 40%
Original high-tech lithium battery Market data shows that from January to February 2024, among China's power battery exports, the export volume of lithium iron phosphate batteries reached 7.5GWh, accounting for 45%. Among them, in January, the export proportion of LiFePO4 batteries reached 50.5%. Compared with the data in 2023, China's lithium iron phosphate battery exports accounted for 30% overall, and the export proportion of lithium iron phosphate batteries in 2024 has increased significantly. Behind this is the result of Chinese battery manufacturers’ continued breakthroughs in overseas markets. What can also be verified by data is that according to the ranking of power battery market share in non-China regions in January 2024 released by the Korean Statistics Agency, CATL continues to maintain its leading position with a market share of 5.7GWh. BYD, which focuses on lithium iron phosphate battery products, has experienced significant growth. Its power battery shipments in overseas markets have increased from 0.3GWh in January 2023 to 1.2GWh in January 2024, a year-on-year increase 261.7%. In recent years, driven by the innovation of domestic battery companies' material systems and structural systems, lithium iron phosphate battery technology has always been the advantage of domestic battery companies. The success of lithium iron phosphate batteries in the domestic new energy market, especially in terms of cost structure, has driven electric vehicles to have "the same price of oil and electricity" or even "lower electricity than oil", making China's lithium iron phosphate technology move from domestic to overseas and gradually change International car companies and battery manufacturers have stereotypes about lithium iron phosphate batteries. In recent years, car companies such as Tesla, Volkswagen, General Motors, Ford, and Northvolt have been increasing the installed capacity of lithium iron phosphate batteries. Traditional international ternary battery giants Samsung SDI, LGES, and SK On have also successively announced the addition of lithium iron phosphate batteries. Plan for battery production line. Among them, LGES recently signed an order for 160,000 tons of lithium iron phosphate cathode materials with Longpan Technology. The emergence of China's first overseas large order for lithium iron phosphate cathode materials marks the official expansion of China's lithium iron phosphate material supply system overseas. From the perspective of market demand, the domestic market structure has formed a market pattern of 30% to 70% for ternary and iron-lithium, and the international market is also accelerating the shift from ternary to iron-lithium. According to the time when overseas lithium iron phosphate batteries are put into production, the battery factory jointly owned by Ford and CATL, South Korea's three major battery companies LGES, SK On, and Samsung SDI will mostly produce lithium iron phosphate batteries in 2026 or even later. As ov...
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Does the electricity generated by photovoltaic need to be stored?
Mar 15, 2024 Does the electricity generated by photovoltaic need to be stored?
When doing household photovoltaic system promotion, people often ask, does the electricity generated by photovoltaic need to be stored? How do you use electricity at night? To understand these problems, we need to understand the concepts of on-grid system and off-grid system. 1. Grid-connected system. The grid-connected system requires the photovoltaic system to be connected to the power grid, and the grid-connected system can be divided into "self-use, surplus electricity online" mode and "full Internet access" mode. Residential grid-connected power generation system is the installation of solar modules on the roof of residents, the system is connected to the grid, and the power supply task is shared. In the case that the amount of sunlight radiation reaches the power generation requirements, the inverter in the system converts the direct current generated by the photovoltaic power generation system into alternating current, which directly supplies power to the residential household load, and the insufficient part is supplemented by the municipal power supply, and the photovoltaic power generation is greater than the residential household electricity consumption, the remaining power is incorporated into the grid. This is the so-called "spontaneous self-use, surplus electricity online" mode. Users can also choose to directly integrate all the power generated by the photovoltaic system into the grid. All the electricity needed for household load is supplied directly by the grid. This is the "full access" model. Characteristics of grid-connected system: 1) Connect to the power grid, and upload part or all of the electricity to the power grid. 2) Power grid outage, photovoltaic power generation also stopped. Because the inverter has anti-island, that is, the power grid company requires: power grid power failure, photovoltaic power must also be immediately cut off. The main concern is safety. 3) Residents still rely on mains electricity at night. 4) No energy storage device. Therefore, the grid-connected power generation system needs to rely on the grid, and the generated energy is transmitted to the grid, which does not need to be stored. At night, we still rely on the grid, on the mains. 2. Off-grid system. Principle and composition of off-grid system. The working principle of the off-grid power generation system is very similar to that of the grid-connected power generation system, except that the power of the off-grid system is not transmitted to the public grid and is directly consumed by the load. Taking into account the volatility of photovoltaic power generation, such as power generation during the day and no power generation at night, good sunny day power generation less or no power generation in rainy weather, residents off-grid power generation system needs to be equipped with batteries (groups). The off-grid solar power generation system consists of photovoltaic modules, controllers, inverters and batteries (groups). Through the understan...
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The major models of
Mar 14, 2024 The major models of "photovoltaic + agriculture"
New energy + new agriculture, one represents the future of green transformation and development, and the other represents the foundation of the national economy and people's livelihood. Photovoltaics have given new vitality to the most traditional agriculture. Photovoltaic agriculture refers to a business model in which agricultural management facilities (or units) are scientifically designed and rationally grafted with photovoltaics in order to achieve multiple uses in one land and increase unit land output during the practice of agricultural production. During the design, construction and operation of photovoltaic power stations, space necessary for agricultural planting and breeding should be reserved to ensure that while the photovoltaic power station generates electricity normally, it can meet the physiological needs of plants and animals, achieve the effects and benefits of agricultural and photovoltaic complementation, and achieve the integration and innovation of ecological agriculture and circular agriculture technology models provide strong technical support for sustainable agricultural development. "Photovoltaic + agriculture" is an emerging form of agriculture. It not only solves the problem of power supply required for water extraction and irrigation machinery, avoids the competition between the photovoltaic industry and agriculture for land, but also sells the excess electricity to the national grid. At present, there are four main modes of photovoltaic agriculture, namely photovoltaic planting, photovoltaic breeding, photovoltaic water conservancy, and photovoltaic cottages, which are divided into mushroom photovoltaic, fishery and photovoltaic complementary, vegetable (fruit) photovoltaic, livestock and poultry (pastoral) photovoltaic, Linguang, medicinal photovoltaics, ecological photovoltaics, water conservancy photovoltaics, etc.In the current wave of rapid development of the  photovoltaic industry, photovoltaic agriculture plays an important role and has broad development prospects. 1. Photovoltaic + Vegetable/Fruits Organically combine rooftop photovoltaic power generation with agricultural planting under the shed to drive the transformation and upgrading of the agricultural industry. In terms of crops, aerospace vegetables or shade-loving plants can be grown. This type of  project can also do some tourism agriculture.   2.Photovoltaic + Breeding industry Photovoltaic plus breeding industry can be used for free-range breeding or breeding sheds. It can breed sheep, pigs, chickens, dairy cattle, beef cattle, rabbits, etc. Most of them are herbivorous animals.   3.Photovoltaic + Fishery Utilizing the vast area of the fish pond, solar panels are installed on it to generate electricity. The photovoltaic modules are arranged three-dimensionally above the water surface, and aquaculture is carried out below.It is dual-purpose in one place, and the profit is significantly higher than that of pure aquaculture.At pre...
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Energy storage system inverter learning
Mar 12, 2024 Energy storage system inverter learning
1. Basic introduction to energy storage systems Battery Energy Storage System (BESS) mainly consists of energy storage batteries, power conversion system (PCS), battery management system (BMS), and energy management system (EMS). Partially composed (as shown in Figure 1). A complete energy storage system BMS should include a plug-in BMS, a battery cluster BMS, and a system BMS. Especially for large-scale energy storage systems, a three-level BMS can avoid voltage imbalance and resulting overcharge or overdischarge to the greatest extent. According to the different levels of PCS, power frequency boost PCS can be divided into single-stage and double-stage. Among them, single-stage PCS is divided into two-level, three-level and multi-level according to the output level. The more levels, the higher the output power quality. The overall architecture of EMS can be divided into support platform and application software. The support platform mainly includes measurement terminals, transmission channels, computers, databases, etc. The application software includes data collection and monitoring, energy management, and network analysis (the energy storage system control structure is shown in Figure 2). 2. Classification of common energy storage system inverters Currently common energy storage inverters can be divided into centralized, distributed, and string types. 2.1) Centralized energy storage inverter solution (see Figure 3) The centralized energy storage inverter solution is mainly used in large-scale ground power stations. The topology diagram from right to left is: high-voltage switch cabinet-transformer-2* energy storage converter-2* bus cabinet-battery cluster. After converging from the DC side, the inverter is centralized. The system topology adopts DC-AC one-level full-bridge inverter. 2.2) Distributed inverter solution (see Figure 4) Figure 4 shows the topology diagram of the distributed energy storage inverter: transformer-string inverter-16*battery cluster (maximum). The converging cabinet is omitted, and the AC side is converging after the DC side inversion is completed. Adopt DC-AC one-level conversion. Figure 5 is the topology diagram of the distributed inverter. The main difference from Figure 4 is the design of the breakpoint. Figure 5 is the DC side isolation switch + fuse solution, and Figure 4 is the AC side circuit breaker solution. The disadvantage in Figure 5 is that the inverter fails and the upper-level switch needs to be disconnected. The advantage is that the DC side has short-circuit protection. The solution in Figure 4 can disconnect the AC side and maintain a single module. The AC side switch is outside the PCS module and the wiring is complicated. Comparison between centralized and distributed inverters 2.3) String inverter solution (see Figure 6) Not only does it manage one cluster per cluster, it also installs an optimizer on the battery PACK to implement energy management down to the battery module level. The available ca...
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2024 Pearl River Delta Energy Storage Annual Conference
Mar 07, 2024 2024 Pearl River Delta Energy Storage Annual Conference
2024 Pearl River Delta Energy Storage Annual Conference In order to promote everyone's understanding of the energy storage industry(solar energy battery) and promote the energy storage market, the three-day (2024 Pearl River Delta Optical Storage Annual Conference) was held in Shenzhen, Guangdong. The annual conference adheres to the concept of "parallel energy storage, resource sharing, and joint progress." The idea is to promote understanding of energy storage(solar system) in various regions. Our company leaders such as Kevin and Avery to attend the meeting to learn more relevant knowledge. The following items were conducted at the meeting: 1. Briefly introduce the meeting process; 2. Introduce the electricity consumption situation in each province; 3. Free communication and learning; 4. Watch on-site solar products; 5. Lucky Draw. At the end of the meeting, it was advocated that everybody work together to develop more energy storage systems, bring convenience to more people, and add glory to the new energy industry.
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