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!