ammonium sulphate Ammonium Sulfate (Fertilizer Grade) Manufacturer: Soraka Chemicals Co., Ltd. Standard: GBT 535-2020 Key Specifications: - Total Nitrogen: 20.8% min - Sulfur Content: 24% min - Moisture: 1% max - Free Acid Content : 1% This fertilizer is ideal for agricultural applications, providing essential nitrogen and sulfur nutrients to support plant growth and soil enrichment.