Oil drilling technology research、 Development and Services; Mechanical equipment、 Development and sales of automated control equipment and accessories; Oil well equipment development and technical services; Import and export of goods、 Technology import and export( law、 Except for items prohibited by administrative regulations; law、 Items restricted by administrative regulations, Only after obtaining a license can you operate)。 Sale: electrical equipment, transformer, Auto Parts, Car decorations, Hardware tools, Wires and cables, Drilling equipment and accessories, Industrial and mining accessories, Instruments, Computers and auxiliary equipment, steel, Plumbing equipment, Labor protection supplies, Building Materials, Decorative materials, rubber products, lubricating oil, office supplies, Office automation equipment and equipment, Chemical products( Does not contain dangerous goods or highly toxic substances), Clothing, shoes and hats, Standard parts, Small machines, Downhole special tools, Electrical Materials, Firefighting equipment, lighting equipment, Electronics, communications equipment, Daily necessities, furniture, Home appliances, Handicrafts, Construction machinery and accessories, batteries, Wood products, plastic products, Knitted textiles, Firefighting equipment, Internal combustion engine and tractor parts, Diesel engine parts。