we--beijing century chemistry co,.ltd, manufacture optical brightener and pharmaceutical intermediates, please see our main product list below or you could visit our web site: www.richapchem.com, if you need further information please do not hesitate in contacting me.

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optical brightener ER C.I.199
optical brightener EB C.I.199:1
optical brightener OB C.I.184
optical brightener OB-1 C.I.393
Optical brightener KCB C.I.367
optical brightenerFp-127 C.I.378

4-carboxydiphenyl/4-phenylbenzoic acid---CAS No: 92-92-2
ethyl 4-fluorobenzoate----CAS No:451-46-7
p-toluic acid------CAS No:99-94-5

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