Established in 2009, Shandong Zhongsheng Marine Biotechnology Co., Ltd. is a subsidiary of Shandong Weikang Group, specializing in the research, development, production, and sales of marine biological products. The company operates two production bases with an annual output of 1,500 tons of chitin, 500 tons of chitosan, and 500 tons of chitosan oligosaccharides (COS). Located in Taoluo Town Industrial Park, Donggang District, Rizhao City, the company has been recognized as a national high-tech enterprise and has established multiple research and development platforms, including a post-doctoral scientific research workstation and an academician workstation. :contentReference[oaicite:0]{index=0}