Licensed Projects: Import and export of goods( Projects that require approval according to law, Business activities can only be carried out after approval from relevant departments, The specific business items are subject to the approval results.) General Projects: Sales of special equipment for oil drilling, Pump and vacuum equipment sales, Mining machinery sales, Mining machinery manufacturing,Metal material manufacturing, Metal material sales, Manufacturing of special equipment for oil drilling( Except for projects that require approval according to law, Carry out business activities independently in accordance with the law with a business license)