Zhejiang Golden-shell Pharmaceutical Co., Ltd., established in 1994, is the largest manufacturer of chitin and chitin derivatives in China. The company is renowned for its comprehensive product line, which includes glucosamine, chitosan, and chitosan oligosaccharides, all derived from natural sources. Golden-Shell is internationally certified with NSF-GMP, ISO22000, ISO9001, and HALAL certifications, and it holds a Drug Manufacturing License for Pharmaceutical Excipients and Active Pharmaceutical Ingredients.