Changzhou Earlybird Chemtech Co., Ltd. is the one of most leading manufacturers chelate agents(including EDTA, EDTA-2Na, EDTA-4Na, EDTA-FeNa, EDTA-CaNa2, EDTA-ZnNa2, EDTA-CuNa2, EDTA-MnNa2, EDTA-MgNa2 and other metal salts), AEEA, DMP30,epoxy resin ...