Shijiazhuang QingQiao Trading Co., ltd., a joint-stock enterprise 500 employees, specializes in the production of EDTA series of products, with annual production capacity of 40, 000 tons. The main products are EDTA EDTA-2Na EDTA-4Na, EDTA-FeNa, EDTA-CuNa2, EDTA-ZnNa2, EDTA-CaNa2, EDTA-MgNa2, EDTA-MnNa2, barbituric acid, 4.6-dihydroxy pyrimidine and ethoxy methylene diethyl malonate.