We SHANGHAI Challenge steel Group is the professional supplier in Steel productOur product contains:Hot Rolled Steel Sheet In Coils" .Cold Rolled Steel Sheet In Coils.Stainless steel coil. Hot-dipped Galvanized Steel Coils (Cold rolled based)" Seamless / Welded Carbon Steel Tubes and Pipes Seamless / Welded Stainless Steel Tubes and Pipes Seamless / Welded Alloy Steel Tubes and Pipes Pipe Fittings and Other steel products.For further products inquiries pls do not hesitate to contact us!