Processing, sales and installation of FRP products, environmental protection equipment, desulfurization and dust removal purification tower, demister, winding pipe, cable pipe, molded septic tank, winding septic tank, polyethylene septic tank, copolypropylene septic tank, oil separator, inspection well, purification tower, cooling tower, cooling tower filler, cooling tower accessories, cable bridge, cable support, sign pile, sign board, water tank Sewage tank cover plate, pultruded profile, FRP storage tank, fan, wind retaining wall, gas meter box, mining ladder room and metal products; Undertake environmental protection equipment, water supply and drainage, cooling tower transformation and maintenance, anti-corrosion and toilet transformation projects, and operate the export business of self-produced products and technologies of the enterprise.