The registered address of chongqing twenty-sixty-sixty-sixty ventilation pipeline products ltd. Is no. 27-17-5 of mau dan road, kowloon poe, chongqing city. The registration authority is the market supervisory authority of kowloon poe district, chongqing city. The legal person is represented by a visible presence, which includes the manufacture, sale, maintenance and technical services of ventilation pipes and accessories, electrical and mechanical equipment; sales of: hardware, construction materials (without chemical hazards); sales, maintenance; refrigeration equipment; energy-saving technical consulting services; and general freight transport (subject to approval for the operation of an approved project and approval for operation). (projects subject to legal approval are not allowed to operate without the approval of the relevant department