General Projects: Electronic component manufacturing, Vacuum coating processing, Mechanical parts、 Parts processing, Metal structure sales, General equipment manufacturing( Excluding special equipment manufacturing), Manufacturing of special equipment for environmental protection, Sales of special equipment for environmental protection, Wastewater treatment and recycling, oil refining、 Manufacturing of special equipment for chemical production, Landscaping project construction( Except for projects that require approval according to law, Carry out business activities independently in accordance with the law with a business license)