Core Viewpoint - The perovskite battery concept has shown a positive performance with a 1.06% increase, ranking fourth among concept sectors, indicating growing investor interest and potential in this technology [1][2]. Market Performance - As of June 20, the perovskite battery sector saw 35 stocks rise, with notable performers including: - Keheng Co., Ltd. (科恒股份) reaching a 20% limit up - Saiwu Technology (赛伍技术) and GCL-Poly Energy (协鑫集成) also hitting the limit up - Jin Xin Nuo (金信诺) and Woge Optoelectronics (沃格光电) increasing by 6.43% and 4.18% respectively [1][2]. - The sector experienced a net inflow of 566 million yuan, with 31 stocks receiving net inflows, and 7 stocks exceeding 30 million yuan in net inflow [2]. Key Stocks and Their Performance - The top stocks in the perovskite battery sector based on net inflow and performance include: - Keheng Co., Ltd. (科恒股份): 20% increase, 2.51 billion yuan net inflow - GCL-Poly Energy (协鑫集成): 9.91% increase, 2.50 billion yuan net inflow - Saiwu Technology (赛伍技术): 10.04% increase, 963.47 million yuan net inflow - Jin Xin Nuo (金信诺): 6.43% increase, 581.85 million yuan net inflow [3][4]. Sector Comparison - The perovskite battery sector's performance is compared to other sectors, with notable increases in: - PET Copper Foil: 2.09% - Lithography Glue: 1.45% - BC Battery: 1.13% - Conversely, sectors like Combustible Ice and Brain-Machine Interface saw declines of -4.14% and -3.34% respectively [2].

Group 1 - The BC battery concept increased by 1.13%, ranking third among concept sectors, with 27 stocks rising, including Zhengye Technology which hit the daily limit up by 20% [1] - Leading stocks in the BC battery sector included Saiwu Technology and Xiexin Integration, both hitting the daily limit up, while stocks like Guangxin Materials and *ST Yunwang experienced significant declines [1][2] - The BC battery sector saw a net inflow of 477 million yuan from main funds, with 26 stocks receiving net inflows, and five stocks exceeding 30 million yuan in net inflow, led by Xiexin Integration with 250 million yuan [2][3] Group 2 - The top three stocks by net inflow ratio were Saiwu Technology at 58.71%, Xiexin Integration at 55.40%, and Zhengye Technology at 33.90% [3] - The trading performance of key stocks included Xiexin Integration with a daily increase of 9.91% and a turnover rate of 3.06%, while Saiwu Technology rose by 10.04% with a turnover rate of 3.54% [3][4] - Stocks with notable declines included Guangxin Materials down by 5.03% and *ST Yunwang down by 4.21%, indicating a mixed performance within the sector [5]

Industry Overview - The PET copper foil sector is experiencing active performance, with notable stock increases for companies like Nord Shares and Yinglian Shares [1] - PET copper foil utilizes a "sandwich" structure, incorporating high polymer materials like PET as the intermediate substrate, with metal layers deposited on both sides, representing dual innovation in materials and production processes [1] - The main new technology routes for composite copper foil include one-step and two-step methods, with the one-step chemical deposition wet method showing significant advantages in production costs and fixed asset investment, as well as high product yield [1] - The rapid development of downstream industries such as new energy vehicles and energy storage is driving continuous demand for high-performance battery materials [1] Market Potential - As a lithium battery anode collector material, PET copper foil can reduce battery weight and enhance energy density, leading to an expanding market demand [1] - According to Chuan Cai Securities, if the penetration rate of composite copper foil reaches 20% by 2025, with global lithium battery shipments reaching 2000 GWh, the market space for PET composite copper foil is expected to reach 26.8 billion yuan by 2025 [1] Company Insights - Citic Securities anticipates a "stable growth period" for the composite collector industry from the second half of 2023 to the first half of 2024, marking it as the best allocation period for the industry [2] - Guojin Securities believes that composite copper foil is a rare and highly potential new direction in lithium battery materials, expected to see explosive growth by 2025 [2] - Baoming Technology has a production yield of approximately 80% for its lithium battery composite copper foil products, which are currently undergoing sample certification [2] - Nord Shares focuses on the research, production, and sales of electrolytic copper foil for lithium-ion batteries, and is also developing composite foil materials [2] - Yinglian Shares has three production lines for composite copper foil, with one line already in operation and two additional water plating lines under commissioning [2] - Zhongyi Technology is in the process of constructing a PET copper foil production line and supplies lithium battery copper foil and standard copper foil to a subsidiary of CATL [2] - Tongguan Copper Foil is engaged in ongoing research for PET copper foil, with a focus on high-precision electronic copper foil manufacturing [3] - Defu Technology is in the pilot testing stage for a new coating process aimed at large-scale production of high-quality composite copper foil [3] - Jingwei Huikai plans to invest in a composite copper (aluminum) foil manufacturing project in the Dafeng Economic Development Zone [4] - Guanghua Technology's chemicals are utilized in both one-step and two-step processes for PET composite copper foil, with a unit value of approximately 1.5 yuan [4]