Dear I need to buy commodity as follows: 1) Commodity: Ammonium Sulphate powder (NH4)2SO4 steel grade For fertilizer 2) Specification: Nitrogen: 20.5 % min Moisture: 1.0 % max Sulphur: 24% Min Free Acid: 1.0%max Color: Gray or off white No smell 3) Quantity: 500MTS 4) Terms: CIF Haiphong port, Vietnam 5) Packing: 50kgs PP/PE bag. 25MTS min/container I would like to cooperate in the long term. Please send me the best offer soon.