Production and processing of color-coated sheets; Color-coated sheets, galvanized sheets, aluminized zinc sheets, aluminum sheets, printed sheets, nano heat-insulating and anti-corrosion sheets, lighting sheets, rock wool, color-steel plates, stainless steel plates, composite plates, C-shaped steel, H-shaped steel, connecting plates, kitchen equipment, food machinery, building hardware materials, strip steel wholesale and retail; Processing and sales of stainless steel scraps; High-speed guardrails, steel structure installation, and sales. (Projects that require approval shall be carried out only after obtaining approval from relevant departments. Such activities are not allowed to engage in those prohibited or restricted by local industrial policies. )