Beijing Jiyi Chemical and Industry Co. Ltd is the domestic largest manufacturer of alkyl phenol such as 2,6-di-tert-butylphenol, 2,4-di-tert-butylphenol .Yearly production capacity for various kinds of alkyl phenol is over 20,000t. The company is also one of the domestic largest manufacturer of antioxidants with yearly production capacity over 10000t,such as antioxidants 1010,1076,168,1135,245 and so on. The standard of the products is international.