Research and development, processing and installation of metal doors and windows, internal and external sunshade products; Deep glass processing; Research and development, processing and installation of curtain wall, steel structure and metal structural parts; Design and construction of decoration and fitment projects; Pipeline valves, metal materials, building decoration materials, hardware products, telecommunications equipment, communication equipment, intelligent monitoring and control system equipment; Wholesale and retail of landscape lighting lighting equipment and automobile parts; Construction of landscape lighting project; Maintenance of seedlings and landscape greening projects; Import and export business of self-owned and agent of various commodities and technologies (except those whose import and export are restricted or prohibited by the state). (Projects subject to approval in accordance with the law may not carry out business activities until approved by relevant departments)