The sulfur coating controlled release complete set of equipment is a new environmental protection process, which wraps the molten sulfur on the surface of urea particles and the sealing material, and is a coated fertilizer with slow-release effect. Sulfur coated urea generally contains 10% – 30% sulfur. Sulfur is not only a medium nutrient element second only to N \ P \ K in crop demand, but also has many functions, such as sterilization, improving soil and increasing soil permeability.