Haichem Co., Ltd. main products cover hair dyes, active cosmetic ingredients etc. We have two production sites and one R&D center with experienced chemists.Haichem does contract manufacturing from kilogram to ton,and has a lot of experiences on reactions of Hydrogenation, Chlorination, Ethoxylation, Acetylation,  Alkylation, Amination (substitution), Diazotization、Nitration, Nitrosation, Cyclization, Sulphonation, Esterification, Etherification, Salt Formation, Amine and Hydrazine Derivatisation etc.Looking forward for a chance to work with your esteemed company!