Project Overview: This project deals with the supply, installation and operation of the design, civil engineering, process equipment, electrical control equipment and auxiliary piping materials of all treatment units in the sewage treatment area of the Puli Service Area (A and B) of the Quanxia Expressway Maintenance, public toilets, office life and sewage in the business area are all included in the design and construction, such as septic tank and grease trap area.