Zhoushan City Shuangying Aquatic Products Co., Ltd. is a manufacturer and trader based in Zhoushan, Zhejiang, China. Established in 2001, the company specializes in frozen mackerel products, including whole round (WR), fillets, flaps, and HGT. Their products are primarily exported to Eastern Europe and other global markets. The company is committed to maintaining high-quality production with certifications including BRC, HACCP, and ISO 22000. With an annual production capacity of over 20,000 metric tons, they cater to large international markets, including Japan, Korea, and Europe.