Gem Bids For Procurement, Fused Tungsten Carbide Powder Size 100 - 200 Mesh, Fused Tungsten Carbide Powder Size 200 - 300 Mesh, Fused Tungsten Carbide Powder Size 400 - 600 Mesh, Tungsten Metal Powder Size 2-3 Micron, Cobalt Powder Size2-5 Micron, Nickel Powder Size 300 Mesh