Hangzhou Grne Biological Technology Co., Ltd. was established on 1 July 2008. It is located in the beautiful West Lake in Hangzhou, a beautiful environment and strategic location. Our factory has got GMP certificate and our company has got GSP certificate which was issued by Chinese government. We are a professional company specialized in producing and managing Neomycin Sulfate and Amino acid. Our volume of Neomycin Sulfate is 500 tons per year, L-Methionine 400 tons per year, L-Serine 300 tons ...