Zhejiang Kente Chemical Co., Ltd,first founded in 1993, is the largest phase transfer catalyst manufacturing enterprise in China. The company specializes in the research development, manufacturing and marketing of new type catalyst, especially in phase transfer catalyst (PTC). We already have four series of more than forty different kinds of mature products, such as Quaternary ammonium salt, Quaternary ammonium hydrate, Quaternary phosphonium salt, and Crown ether series. The main products have more than 80% domestic market share.Several products have absolute advantage on quality level and quality stability, such as Benzyl Trim ethyl Ammonium Chloride, Benzyl Triethyl Ammonium Chloride, Tetramethyl Ammonium Chloride, Tetrabutyl Ammonium Bromide, Methyl Triphenyl Phosphonium Bromide, Ethyl Triphenyl Phosphonium Bromide, 18-Crown-6, Triethyl Amine Hydrochloride etc.