Zhonglan Industry Co.,Ltd.is a professional manufacture of EDTA , EDTA-2Na,EDTA-4Na,EDTA-FeNa,EDTA-CuNa2,EDTA-ZnNa2,EDTA-CaNa2,EDTA-MgNa2,EDTA-MnNa2, and other EDTA series of products.She has been in the field for almost 20 years which was built in 1996.