Building materials retail; plastic products manufacturing; plastic products wholesale; cement products manufacturing; machinery and equipment wholesale; machinery manufacturing for building materials production; insulation and soundproofing materials manufacturing; hardware products wholesale; metal chain and other metal products manufacturing; door and window manufacturing; metal structure manufacturing; photovoltaic equipment and components manufacturing; lubricant retail; information consulting services (excluding licensed information consulting services); information technology consulting services; building materials wholesale; technology import and export; road freight transportation; new material technology research and development, technology promotion, technical services; nanomaterials manufacturing and sales; aluminum sheet bending, cutting, and sales; metal products, packaging products, aluminum products, processing, and sales; coatings, sealing materials (excluding hazardous chemicals) sales.