Group 1 - The core point of the news is that Yangfan New Materials, a well-known domestic listed UV material company, has received a notice of investigation regarding its controlling shareholder and actual controller, Fan Peiren, who is under detention and investigation by the local authorities [1][2] - Fan Peiren, along with Yang Meiyi and Fan Bin, collectively holds 36.50% of the company's shares through Zhejiang Yangfan Holding Group Co., Ltd. and Marshall SFC Ltd. [2] - Yangfan New Materials reported a significant turnaround in its financial performance for the first half of the year, achieving a revenue of 472.95 million yuan, a 47.93% increase year-on-year, and a net profit of 23.14 million yuan, compared to a loss of 21.24 million yuan in the same period last year [3][4] Group 2 - The company specializes in the research, production, and sales of UV curing new materials and sulfur-containing fine chemical new materials, having been established in December 2002 [5] - Yangfan New Materials has a designed production capacity of 16,000 tons for photoinitiators, with significant expansions planned at its production bases [7] - The company has been focusing on continuous technological innovation to enhance the performance and applicability of its photoinitiator products, including the development of a new type of photoinitiator that shows superior performance compared to traditional small molecule photoinitiators [9]