N21 Ammonium Sulfate Granular Fertilizer is a high-quality nitrogen fertilizer with 21% nitrogen content, featuring white crystal lump or powder form. This versatile fertilizer is soluble in water but insoluble in ethanol, making it suitable for various agricultural applications.

Ammonium sulfate serves as an effective nitrogen fertilizer that is quickly absorbed by soil and converted into ammonium nitrogen for plant utilization. It significantly enhances yield and quality for sulfur crops including tobacco, potato, and onion while improving crop flavor. The acidic properties help regulate soil pH for optimal growing conditions.

Used as a raw material for superphosphate and compound fertilizer production, as a dyeing aid in textile industries to improve color brightness and durability, and in pharmaceutical, tanning, and electroplating applications.

In wastewater treatment, ammonium sulfate helps adjust nitrogen-phosphorus ratios, promotes biological treatment effectiveness, reduces water eutrophication, and supports resource recycling for economic and ecological benefits.

• Contains NPK for uniform grass coloration without additional fertilizer mixing
• Long-term effectiveness with high utilization rate reduces fertilization frequency
• Easy application requiring minimal water after fertilization
• Uniform granules compatible with household and agricultural fertilizer equipment
• Competitive pricing suitable for domestic and international markets
• Low-phosphorus formula minimizes environmental impact on water sources