Tianjin yadong group is a Hi-Tech Enterprise, which is dedicated to research, development and production of fine chemicals. products: 1.Dyestuff: Direct Dyestuff,Acid Dyestuff,Reactive Dyestuff, Sulphur Dyestuff 2.Pigment paste: Violet and Blue 3.Dyestuff Intermediates(Beta Naphthol,Tobias Acid,k Acid,J Acid,J Acid Urea,Phenyl J Acid,DI J Acid ,H Acid etc.)4.Basic chemicals: Sulphuric Acid, Sodium Nitrite, Soda Ash Light, Caustic Soda flakes, PAC（Polyaluminium Chloride), Sodium Sulphide Red Flakes, Sodium Sulphate Anhydrous and Sodium Hydrosulfite.5.Textile Dying and and Printing agent