Zhuzhou Hansen Chemicals Co., Ltd.(Hunan Ansen Biotechnology Co., Ltd.) located at Xinma Industrial Park, Tianyuan District, Ču-čou 412000, Čína. The transportation is very convenient, Occupation of 18000 square meter, plant occupation of 7000 square meter. Has GMP clean production workshop. We’ve been focusing on the research and development, production and sales of MSM for twenty years, is an very experienced MSM & DMSO manufacturer with an annual producing capacity of over 4000 tons, and our products quality is stable and reliable.