High Purity Ammonium Sulphate Crystal Fertilizer 20.5%-21% Nitrogen

High Purity Ammonium Sulphate Crystal Fertilizer 20.5%-21% Nitrogen. Multiple Grade Options: Available in Superior, First, and Second grades meeting GB535-1995 standards. Customizable Granular Size: Sizes available include 2mm-4mm, 1mm-2mm, and 0.5mm-1mm. Versatile Applications: Used as nitrogen fertilizer in agriculture and as raw material in chemical industry. OEM Service Available: Minor customization options are supported for specific needs. ISO9001 Certified: Product quality is certified under ISO9001 standards. Free Samples Available: Free samples can be provided for quality verification. Flexible Payment Terms: Accepts LC, T/T, D/P, and Western Union for international trade.