SEA FORESTparticipates in the exhibition World Smart Energy Week 2024 PV SYSTEM EXPO 2024 TOKYO

Solar Power International (RE+) Invitation Letter Dear Sir/Madam, We are pleased to invite you and your company representatives to visit our booth at the Solar Power International (RE+). Our Main Product：Solar Energy Storage Solution；P type & N Type Solar Panel；Flexible Solar Panel and BIPV Solar Panel. We would like to take this opportunity to show you our latest products and discuss possible cooperation with you. Company:Xiamen Seashine Forest Industry And Trade Co., Ltd.  SEA FOREST ENERGY STORAGE SOLUTION CORP Our Booth: Hall E, Booth:13029 Venue: Anaheim Convention Center Date:2024.9.10    10：00--18：00         2024.9.11    09：00--18：00         2024.9.12    09：00--14：00

We are optimistic that global energy storage demand is expected to maintain high growth in 2024. It is estimated that global energy storage shipments (excluding communication energy storage) will reach 273GWh in 2024, of which China/the United States/Europe/Australia/Japan/other regions will be 86/78/50/6/3/49GWh respectively. 我们看好 2024 年全球储能需求有望保持高增需求。预计2024年全球储能出货量（不含通信储能）将达到273GWh，其中中国/美国/欧洲/澳洲/日本/其他地区分别为86/78/50/6/3/49GWh。   当社は、世界のエネルギー貯蔵需要が 2024 年も高い成長を維持すると予想されます。 世界のエネルギー貯蔵出荷量（通信エネルギー貯蔵を除く）は2024年に273GWhに達すると予想されており、このうち中国/米国/欧州/オーストラリア/日本/その他の地域はそれぞれ86/78/50/6/3/49GWhとなる。

Large cells bring higher integration efficiency Large-capacity cells have natural cost advantages and clear development trends. The industry transitioned from 280Ah to 314Ah cells, and gradually developed towards 500Ah+ cells. In 2021-2022, domestic mainstream cell manufacturers launched 280Ah cells and quickly achieved mass application; in the first half of 2023, various companies developed and gradually mass-produced 300Ah+ energy storage cells. As of now, 314Ah cells have become the first choice and main product of various manufacturers' new energy storage products, and have begun to accelerate penetration; currently, various cell manufacturers have begun to develop larger capacity energy storage cells, such as CATL 580Ah+, EVE Energy 628Ah, Hithium 1130Ah, REPT BATTERO 587Ah/625Ah cells, Narada 690Ah, and Sunwoda 628Ah. Most companies plan to start mass production in 2025. 大电芯带来更高集成效率 大容量电芯具备天然成本优势，发展趋势明确。行业从280Ah过渡至314Ah电芯，并逐步向500Ah+电芯发展。2021-2022 年，国内主流电芯厂均推出 280Ah 电芯并快速实现批量应用；2023年上半年各企业研发并逐步量产300Ah+储能电芯，截至目前，314Ah电芯成各厂商储能新品首选与主推产品，并开始加速渗透；目前各电芯厂开始研发更大容量储能电芯，如宁德时代580Ah+、亿纬锂能628Ah、海辰储能1130Ah、瑞浦兰钧587Ah/625Ah电芯、南都电源690Ah、欣旺达628Ah，大多企业计划2025年起量产。   大型バッテリーセルがより高い集積効率を実現  大容量バッテリーには当然のコスト上の利点があり、明確な開発傾向があります。 業界は 280Ah から 314Ah バッテリーに移行し、徐々に 500Ah+ バッテリーに移行しています。  2021年から2022年にかけて、国内の主流バッテリーセルメーカーは280Ahバッテリーを発売し、2023年前半にはバッチアプリケーションを迅速に導入し、さまざまな企業が300Ah以上のエネルギー貯蔵バッテリーを開発し、段階的に量産する予定です。さまざまなメーカーの新エネルギー貯蔵製品の第一選択であり、普及が加速し始めています。現在、バッテリーセルメーカーは大容量エネルギー貯蔵セルの開発を開始しています。CATLの580Ah+、EVE Energyの628Ah、Hithiumの1130AH、REPT BATTEROの587Ah/625Ah、Narada Powerの690Ah、Sunwodaの628Ah、ほとんどの企業が2025年に量産を開始する予定です。

  23.5%! NTOPCon battery mass production efficiency hits a new high!   The conversion efficiency of NTOPCon high-efficiency double-sided solar cells in mass production reached 23.5%, which once again refreshed the N-type cell mass production efficiency, laying a solid foundation for the further popularization of N-type photovoltaic products.   The efficiency breakthrough is based on the N-type 158 square silicon wafer, double-sided power generation design, by optimizing the boron expansion process and redesigning the matching metallization process to increase the mass production efficiency to 23.5%, and the highest single-chip efficiency 23.8%. Compared with the 23.2% at the end of last year, the efficiency has increased by 0.3%, and the effective output has increased by 35%. Under the condition of no cost increase, the effect of improving efficiency and reducing costs is significant.

TOPCon mass production shows great potential Commercialized solar cells aim to achieve over 24% efficiency in the near future. Since PERC cell gradually approaches its efficiency limit, TOPCon solar cell is regarded as the most promising technology to be the major product in the next solar cell generation which can replace PERC cells. As technology of solar cell tends to be mature, the reduction of the cost of Si, glass, installation system and mounting rack is very difficult. In the future, the reduction of LCOE of solar energy depends on the increments of solar cells’ efficiency. Based on the current cost, 1% efficiency increment will reduce 2.82cents/Wp. Compare with PERC cell, TOPCon cell has higher potential on efficiency and stablility. LID and LeTID are always a big problem of PERC cells. However, the TOPCon cell doesn’t have the risk of LID and LeTID due to the features of N-type c-Si. Furthermore, the efficiency limit of TOPCon cells is around 28.7% which is much higher than 25% of PERC and 27.5% of HJT. It is very close to ideal efficiency limit of c-Si, 29.43%. Thus, TOPCon cell has higher potential to develop. In the past few years, had great achievenments on N-type TOPCon solar cell. The efficiencies of TOPCon solar cells reach 24.5%. The new technology, J-TOPCon 2.0, apply the original POPAID (Plasma Oxidation&Plasma Assisted Insitu-doping Deposition） technology. Compare with J-TOPCon 1.0, 2.0 reduces the processing steps and achieve the higher efficiency and yield. J-TOPCon 2.0 curtail 3 manufacturing processing steps. The single-side surface poly-Si deposition and doping of poly-Si can be completed in one step which can further decrease the cost. J-TOPCon 2.0 achieves 24.5% solar cell efficiency by omitting the etching step of wrap-around Poly-Si which avoid the damage of pyramids of the surface. TOPCon module produces more electricity per watt compared with p type. Each 10W increment on the module will bring 0.05RMB/W premium. In the future, the LCOE of TOPCon modules will be continuing reducing to achieve the same cost of PERC modules.