we are one leading professional manufacturer of opitcal brighteners in China since the year 1996.Our products mainly apply to detergent industry,paper-making industry,textile industry, dyeing and painting industry etc. we expect to cooperate with all customer from all over the world.Our Optical brightener mainly including the following specifications:BA (C.I.113),BBU (C.I.220),CBS-X,CBS-L (C.I.351),DMS / AMS (C.I.71),CXT (C.I.71),VBL (C.I.85),210 (C.I 210) ,APC (C.I.220),CBW (C.I.351),KCB (C.I.367 ),31# ( C.I.31),5BM (CAS13863-31-5),BA-L (C.I.113),ER-330 (C.I.199),OB (C.I.184),OB-1 (C.I.393),OBAFor more products and information of us,please visit our website www.qshg.com/english/qygk.asp Please do not hesitated to contact with me if you have enquiry or questions.Best Regards, Cindy ( Shanghai Sales Office)*********************************Tel:0086-021-60950450Fax:0086-021-60950462Mob:0086-13402062752qschemical(at)163.com Add:No.278 Wenshui East Rd,HongKou District,Shanghai,China