Group 1 - The core viewpoint of the article highlights that JunDa Co., Ltd. (02865) has seen a significant stock price increase, rising over 7% in early trading, with a current price of 17.04 HKD and a trading volume of 30.05 million HKD [1] - Recently, JunDa Co., Ltd. announced the successful production of its first industrialized TOPCon + perovskite tandem solar cell at its Chuzhou base [1] - The company has provided a debt guarantee of 350 million CNY for its subsidiary Huai'an Jietai [1] Group 2 - Guozheng International noted that JunDa's TOPCon production capacity is 44.4 GW, with two production bases located in Anhui Chuzhou and Jiangsu Huai'an [1] - The Anhui Chuzhou production base is one of the world's first to achieve large-scale production of TOPCon solar cells [1] - The company's production bases are equipped with efficient automated production capabilities, allowing for rapid capacity expansion within 4-5 months [1] Group 3 - The existing production bases have room for technological upgrades to adapt to new technology routes [1] - If TBC solar cells achieve large-scale production in the future, the current production lines can be modified to produce TBC cells, enhancing investment returns [1]