... the material,our material are from TAIYUAN IRON&STEEL(GROUP)CO.,LTD.which was used by high ... controlled in quality and surface. 1. Prime cold rolled steel coil2. Certificate:ISO9001:20083. payment terms:T/T, ... Precision cold strip coil and tight with the steel. Grade:JIS,ASTM,AISI,GB,DINSpecification:0.18mm ... ,AISI,ASTM,GB,BS,DINApplication:High Grade Security Door, Construction Material, and so on