Jiangsu Sihuan Bioengineering Co., Ltd. (000518.SZ) engages primarily in the research, development, manufacture, and sale of biopharmaceutical products and landscaping services in China. The company produces core pharmaceutical offerings including delusen, an anti-tumor biotherapeutic drug for treating kidney cancer, malignant melanoma, and cancerous chest and abdominal masses; Xinde Lusheng; Xin Lisheng; Ring BO; injections; raw materials; tablets; alcohol-based products; and other bioengineering medicines; alongside landscaping operations such as greening construction, breeding and sales of flowers and seedlings, and tree leasing. Founded in 1992 and headquartered in Jiangyin, Wuxi, Jiangsu province, China, it operates mainly in the domestic market through subsidiaries like Jiangsu Chenwei Ecological Park Technology Co., Ltd., targeting healthcare providers and landscaping customers with approximately 277 employees. In recent developments, Fujian Bishui Agricultural Investment Co., Ltd. completed the acquisition of a 27.78% stake from Yu Qinfen, marking a significant ownership change; the company reported net losses in 2024 and into 2025 amid pharmaceutical market competition and issued its semi-annual and third-quarter 2025 reports reflecting revenue declines; additionally, its subsidiary Chenwei Ecological Park settled enforcement disputes and was removed from untrustworthy defendant lists.