Selling ferro sulphur

We are one of the biggest pyrite products manufacturer in China. Our main products are high quality pyrite/ferro sulphur /FeS2 lumps and its powder.The quality and the size as follows: Pyrite lumps(FeS2): Quality: S 48%min; Fe 43%min; SiO2 3%max; H2O 1%max. Size: 3-15mm; 10-30mm; 10-50mm; 10-80mm. Pyrite powder(FeS2): Quality : S 48% min; Fe 43% min; SiO2 3%max; H2O 1% max. Size:100 mesh X down; 200 mesh 90% down; 325mesh 70%min down; 400mesh 60% min down