1. material: steel, iron, and high tensile steel 2. size: from 0.2mm to 7mm 3. Surface: black annleald, E.G and H.D.G 1. material: steel, iron, and high tensile steel 2. size: from 0.2mm to 7mm 3. Surface: black annleald, E.G and H.D.G4. Packing: 1kg/coil-1000kg/coil