... bright annealing material, hot rolled steel strip. There are four colors in the products surface: black gray, bright (white), blue ... . Low carbon steel is: 40#, 45#,Q195, Q215, Q235.The specification is: thickness 0.25mm-2.5mm, width for heat treatment ... South-Asia, Africa, EU, and America.Whether the flatness and straightness, or the materials stability and surface cleanness, liangyu steel stands ...