Ningbo Sansheng Biological Technology Co., Ltd. originated in 1958. The company mainly produces reproductive hormones for fish and livestock, and vigorously promotes precise batched sow farrowing management and timed artificial insemination for large-scale farms. At present, the company's products have obtained 5 new veterinary drug certificates in category two and 9 in category three. In the past three years, nine invention patents have been granted.