We are leading manufacturers of chemical intermediates in China.we have obtained ISO90012000 quality system certification.our products have been exported to many countries ,and enjoy high reputation among users.Mainly exporting products1.O-Tolunitrile (CAS NO.529-19-1)2.P-Tolunitrile (CAS NO.104-85-8)3.O-Toluic Acid (CAS NO.118-90-1)4.P-Toluic Acid (CAS NO.99-94-5)5.Optical brightener agents OB,OB-1,OB-2,KSN,CBS-127,