The business scope includes licensed projects: Construction projects; Construction engineering design (for projects subject to approval according to law, business activities can only be carried out after approval by relevant departments, and the specific business projects shall be subject to the approval results) General projects: Manufacturing of special equipment for environmental protection; Sales of special equipment for environmental protection; Sales of plastic products; Fiberglass reinforced plastic products sales; Hardware products wholesale; Instrument sales; Fan, fan sales; Pump and vacuum equipment sales; Valves and cocks for sale