共同药业：公司主要从事甾体药物原料的研发、生产及销售

Core Viewpoint - The company primarily engages in the research, production, and sales of steroid drug raw materials, with a focus on progesterone products for gynecological and family planning medications [2] Group 1: Company Operations - The company is involved in the development, production, and sales of steroid drug raw materials [2] - The company's fundraising projects and steroid raw material production projects include the extension of progesterone products for downstream applications [2] - The company's products are categorized based on sales regions, which include domestic and international sales [2]