steel trolley: material: Q235 surface finish: powder coating customed design is welcomed. steel trolley:We supply metal welding part and products as per your drawings or samples.(1)Metiarial: stainless steel, iron (SPCC, ,SECC, SPTE, tinplate), aluminum alloy,red copper, brass, bronze alloy, etc.(2)Surface:polishing, coating(e-coating, powder coating, and immersion coating), and plating(chrome, ...