General Projects: Environmental consulting services; Research and development of resource recycling technology; Manufacturing of construction machinery; Sales of construction machinery; Rental of construction machinery and equipment; Manufacturing of specialized environmental protection equipment; Sales of specialized environmental protection equipment; Machining of mechanical parts and components; Sales of mechanical parts and components; Manufacturing of agricultural machinery; Manufacturing of agricultural, forestry, animal husbandry, and fishery machinery accessories; Sales of agricultural, forestry, animal husbandry, and fishery machinery accessories; Sales of mining machinery; (Operate independently and lawfully in accordance with the business license, except for projects that require special approval) License Projects: Goods import and export; (Operate independently and lawfully in accordance with the approval, specific business projects subject to the approval results)