... >sample ok 4>Hole:all kinds up to you perforated metal pieceMaterial: low carbon steel, stainless steel, cuprum board, nickel board ... depot, and the protecting of the machine. mine-serving-meshMaterial quality: Chromium, 304 304L 316 316LKnitting: Even grain knitting and cross ... alkali, thermo stable, the pulling force and wear resistant perforated metal sheet