Group 1 - The company involved in the IPO is Guangdong Jinding Optical Technology Co., Ltd., which was established on August 10, 2011, and focuses on the research, development, production, and sales of precision optical intelligent manufacturing equipment and precision optical components [5][6] - The company has developed various advanced equipment, including fully automatic aspheric precision molding machines, ultra-precision single-point diamond lathes, ultra-precision aspheric grinding machines, and optical cold processing equipment, showcasing its strong R&D capabilities [5] - The company's products are sold in countries such as Japan, the United States, and Germany, as well as in regions like Hong Kong and Taiwan [5] Group 2 - The company has a registered capital of 55.264319 million RMB and is classified under the specialized equipment manufacturing industry [6] - The controlling shareholder is Zhang Shengfeng, who directly holds 9.955 million shares, accounting for 18.01% of the total share capital, and indirectly controls an additional 12.95%, totaling 30.96% [6] - The company previously listed its shares on the National Equities Exchange and Quotations system starting from August 8, 2016, but ceased trading on April 11, 2019, within a period of less than three years [5][6]