Group 1 - JunDa Co., Ltd. (02865) saw its stock price increase by 8.16%, reaching HKD 16.84, with a trading volume of HKD 54.345 million [1] - The company announced that its perovskite battery is still in the research and development stage, but it has successfully achieved the first industrialized TOPCon + perovskite tandem battery, measuring 210×105mm, at its Chuzhou base [1] - This achievement marks a significant step in the industrialization verification of tandem batteries, demonstrating the company's capability for stable production and small batch shipments [1] Group 2 - Guozheng International reported that JunDa's TOPCon production capacity is 44.4 GW, with two production bases located in Chuzhou, Anhui, and Huai'an, Jiangsu, each with a capacity of 22.2 GW [2] - The Chuzhou production base is one of the first in the world to achieve large-scale production of TOPCon batteries [2] - The company has the ability to rapidly expand production capacity, with the construction of both production bases completed in 4-5 months [2] - Existing production bases have room for technological upgrades to adapt to new technology routes, allowing for potential conversion to TBC battery production, which could enhance investment returns [2]