... white powder 4,Use for Agriculture Grade 1,Product name Zinc Sulphate Hepta2,Purity Zn 22% min3,Appearance white powder4, ... Use for Agriculture Grade Specifications Zinc Sulphate Hepta Zn 22% minPb 0.002% maxAs 0. ... ,Sodium Benzoate, and Benzoate Acid. Besides we have established stable business relationships with customers from many countries and regions,such ...