Kaifeng Huaxing Chemical Factory is one of the leading enterprises in China with more than 40 years history in the field of fine and specialty chemicals. Our activities include the research, manufacture and trade of the said chemicals. Main products are: Tolunitri1e series, Toluic Acid, Optical Brightener Agent series, Food Additives. Our products have obtained ISO9001:2000 quality system certification.our products have high quality and best price,every year,we export them to many countries and enjoy high reputation. 1.O-Tolunitrile (CAS:529-19-1) 2.P-Tolunitrile (CAS:104-85-8) 3.M-Tolunitrile (CAS:620-22-4) 4.O-Toluic Acid (CAS:118-90-1) 5.P-Toluic Acid (CAS:99-94-5) 6.Optical Brightener agent OB,OB-1,OB-2,KSN,CBS-127,PF,etc