Dear Sir or Madam: Changzhou Shanfeng Chemical Co.,Ltd, as a production base of EDTA and EDTA salt derivation appointed by the Ministry of Chemical Industry in china.The integrated production capacity of equipment is over 15000 MT/year, among EDTA 10000 MT/year, EDTA-2Na 3000 MT/year, EDTA-4Na 1500 MT/year, EDTA-FeNa 500 MT/year, EDTA-Mg, EDTA-Zn, EDTA-Ca,EDTA-Cu And Hydroxyethyl Ethylene diamine or Amionethyl ethanomine(AEEA), 3000 MT/year, is evaluated as provincal new and high product. If