We need a great deal of Sulfur Granular for a long period. The specifications are as followed: Quality requirements(mass percentage) Sulfur content ≧ 99.95 moisture content ≦ 2 Ash ≦ 0.1 Ac 0.005 Organic substance ≦ 0.3 Arsenic(As) ≦ 0.01 Ferrum(Fe) ≦ 0.005 screen tailings(筛余物) particle size ≧ 150μm