We are a leading supplier for Fluorescent brightener, dyes, and pigments from Hangzhou, China Dyes(SolventYellow 14, Yellow 82, Yellow 115, Yellow 4G, Solvetn Red 24, Solvent Red 8, Red 122, Red 172, Black 27,34, Solvent Blue 35,36, Blue 45, Blue 67, Solvent Organge 45, Organge 62, Solvent Green 3, Green 5, Green 70, Solvent Violet 49, Solvent Brown 53 and so on) Brightener, Optical Brightener, Optical Brightening Agent(Oba)Fluorescent Whitening Agent(FWA)such as BBU(C. I.220), ER(C. I.199), ER-II(C. I.199:1), ER-III, ER-330(C. I.199), OB(C. I.184), OB-1(C. I.393), OB-2, OB-4, FP-127/CBS-127(C. I.378), KSN(C. I.368), CBS-X(C. I.351), VBL(C. I.85), PF(C. I.135), CPW(C. I.140), KCB(C. I.367), CXT(C. I.71), BA(CI.113),4BK,31#, DMS, and son on OBA'Intermediates: Sulfanilic acid,4,4'-Bis(diethoxyphophonomethyl)diphenyl, Thiophene-2,5-dicarboxyl acid,4,4'-bis(Chloromethyl)-Diphenyl,2-methoxybenzaldehyde,2-Amino-4-tert-Butylphenol, Benzaldehyde-2-Sulfonicid Sodium Pigment Red