Group 1: Company Overview - Chengdu Chaochun (UPAM) is a national high-tech manufacturing enterprise established in 2005, focusing on semiconductor etching devices, high-power laser devices, and special ceramics [1] - The company has developed various processes, including advanced surface treatment, purification processes achieving purity above 5N, and advanced ceramic production processes [1] - Chengdu Chaochun has undergone four rounds of financing, with notable investors including Novartis Capital, Zhenghai Capital, and BYD [1] Group 2: Shareholding Structure - The current shareholding structure shows that Chai Jie controls 49.11% of the voting rights, making him the controlling shareholder and actual controller of the company [1] - Chai Jie's brother, Chai Lin, directly holds 20.99% of the shares, making them combined control approximately 70% of the company's shares [1] Group 3: Company Overview - Langxun Technology, founded in 2010, is a leading integrated circuit testing service provider in China, focusing on R&D and high-end chip testing services [2] - The company provides end-to-end ATE testing services, including wafer testing, final testing, burn-in testing, and system-level testing [2] - Langxun Technology has established high-end testing bases and R&D centers across multiple locations in China, with a focus on smart terminals, core computing, AI, automotive, and communication chip sectors [2] Group 4: Shareholding Structure - The controlling shareholder of Langxun Technology is Xu Zhen, who directly holds 993.73 million shares, accounting for 23.15% of the company [3]