buy Selenium Picolinate And Selenium Gluconate

We are interested to import Ammonium Sulphate Fertilizer Grade.Specification:- Nitrogen(N) content(based on dry basis): 20.5%min- Water content(H 2 O): 0.5%max- Free acid conten: 0.08%max- Water insoluble Content: 0.01%maxPacking: Net 50kg plastic woven bags with inner linerQuantity: 1000MT monthPlease quote the price at CIF Haiphong port、 CIP Dongdang Station or DAF Huunghi Vietnam