“Petroleum machinery, downhole tools, low-voltage electrical appliances, steel pipe fittings, non-standard parts, wires and cables, instruments and meters, optical cables, submersible electric pump units, power distribution switchgear equipment manufacturing, sales, repair, and technical services; Plastic products, clothing, antifreeze, heat transfer oil, thread sealing grease, chemical products, chemical additives (excluding flammable, explosive, and dangerous goods), pump accessories, special protection supplies, lubricating oil, office supplies, insulation, anti-corrosion, flame-retardant materials, rubber products, brake pads, filter production and sales; Electronic products, cast iron pipe fittings, daily miscellaneous (excluding firecrackers), petroleum specialized pipes, pesticides (excluding highly toxic and highly toxic), tires, boiler equipment and accessories, light textile products, standard parts, power equipment, electrical equipment, Class II and below electromechanical products, paper products, steel, building materials, labor protection supplies, hardware tools, office supplies and equipment, communication equipment, automobile parts, drilling and production accessories, computers, refractory materials, industrial and mining accessories, iron ore, iron crystal powder, coal, pre-packaged food sales; Paper product processing, riveting and welding processing, pipeline anti-corrosion and insulation, metal surface treatment, network integration, housing leasing; Energy-saving and environmental protection technology, computer software development, consulting, and technology application; Printed matter printing, road cargo transportation: general freight; Dangerous goods transportation (Category 3, Item 1); Gasoline and diesel (separate branch); Vehicle leasing, equipment leasing; Road asphalt storage and sales; Hazardous chemical retail (no storage, operate according to the categories approved by the license); Waste material recycling and sales; Property management; Downhole operations; Residue oil, fuel oil, thousand-second oil, shale oil, ethylene tar, slurry, heavy oil storage and sales (storage warehouse located in Panshan Youyi); Iron ore, iron crystal powder, coal sales; Briquette processing and sales; Clean coal technology development and services; Domestic labor; Pipeline cleaning (excluding pressure pipelines); Well site preparation; Greening engineering; Petroleum exploration and development equipment, pipe repair and sales; Drilling, cementing, oil production technology development and services; Oilfield geological exploration technology research and analysis; Oilfield chemistry, oil and gas gathering and transportation and supporting processes, oil and water well testing and technical services, oil well gas injection technical services, oil sludge harmless treatment, aged oil treatment technical services; Pipeline cleaning; Fuel oil production and sales (operated by branch), motor vehicle repair; Housing construction engineering; Mechanical and electrical equipment installation engineering; Fire-fighting facility engineering; Building decoration engineering; Enterprise safety technical consulting and services; Borehole seismic and vertical seismic profile logging technical services; Metal pipe processing; Heating services, natural gas recovery and purification services; Motor, pump, and petrochemical equipment integrated device manufacturing, repair, design, and sales; Catering services (operated by branch); Loading, unloading, and handling services; Thermal recovery boiler dryness sampler, water treatment equipment, boiler burner and accessories and fuel pipeline, industrial automation control system development, sales, repair, and technical services; Generator set, frequency converter, refrigeration equipment, electronic scale, office equipment, thermal recovery boiler control system, transformer, oilfield pipeline construction equipment, air compressor, pumping unit reducer repair; Electronic monitoring system installation, repair, and technical services; Domestic waste and sewage treatment; Power engineering construction; Electronic information system operation and maintenance; Thermal recovery boiler data remote transmission services; Instrument and meter testing services.”,