Qingdao Seawin Biotech Group Co., Ltd

Founded in 2000, Qingdao Seawin Biotech Group Co., Ltd. develops marine biological resources for biostimulants, functional specialty fertilizers, marine biological products, environmental protection services, and health foods. Its agricultural work centers on seaweed and kelp extracts, chitosan oligosaccharide, fulvic acid, and marine biofertilizers. Product development covers balanced NPK nutrition, micronutrient management, flowering and fruit development, and soil conditioning. The group also produces green algae ingredients for aquaculture, livestock, and poultry nutrition, including Ulva polysaccharide and Ulva prolifera powder. Its fertilizer business extends to processing equipment, production line design, equipment selection, assembly guidance, process optimization, and technical consulting.

Manufacturing is organized across production bases in Qingdao Jiaozhou, Rushan Winsea, Rongcheng Rentai, and the Qingdao High-tech Zone marine biological products industry base. The Rentai operation processes Laminaria japonica and has an annual drying capacity of 50,000 metric tons of kelp. The company’s marine biofertilizer products hold certifications that include REACH registration for kelp extract, EU ECOCERT organic certification, US OMRI organic certification, and several Chinese organic production input certifications. Its products are registered and exported to more than 60 countries and regions, serving agricultural markets across Europe, the Americas, Africa, Oceania, and the Middle East.