Shengli Oil Field Aokailong Petroleum Engineering Co., Ltd

International Industry Category: Scientific research and technical services

International Industry Major Class: Professional technical services

International Industry Middle Class: Industrial and professional design and other professional technical services

International Industry Sub Class: Other unlisted professional technical services

drilling、 Sidetrack wells、 Well repair construction services； Drilling technical services； Oil equipment insulation services； General cargo road transport； Drilling mud environmental treatment services； geological drilling； drilling equipment、 Mechanical and electrical equipment、 Solids control equipment、 Petroleum machinery parts、 Drilling winter insulation device、 petrochemical products（ No hazardous chemicals）、 Industrial and civil cleaning products、 Aluminum alloy doors and windows、 Camping House、 Woven products、 Insulation products、 Tarpaulin cover、 Vibrating screen、 Choke and kill pipe fittings、 Labor protection supplies、 Casing tongs and accessories、Distribution box processing, manufacturing and sales； Explosion-proof circuit engineering；Petroleum machinery and equipment、Diesel engine maintenance； Boiler installation and maintenance； Petroleum and petrochemical cleaning projects、 Landscaping Project； Riveted parts、 Drill thread compound（ No hazardous chemicals）、 pressure vessels、 Impermeable cloth、 Geomembrane、 grease、 Drilling aids、 Casing centralizer、 Low-voltage switchgear、 Production and sales of main components and accessories of low-voltage electrical appliances； houses、 vehicle、 Machinery and equipment rental（ Excluding finance leases）； office supplies、 Daily necessities、 Hardware and Electrical、 building materials、 communications equipment（ Does not include ground satellite receiving and wireless transmitting devices）、Office automation equipment、 Instrument sales； Electrical Appliance Manufacturing、 Sales and repair； Exhibition Board、 Signage production and sales； Explosion-proof electrical production and services； Labor dispatch； Import and export business； Property Services； Energy Performance Contracting； Energy-saving technology services； Ship Agency， freight forwarding， Water transport services（ No dangerous goods）；（ The following business matters are limited to branch operations） Large restaurants： With cold dishes、 No decorated cake、 No raw seafood； Guest Room、 Meeting Room； Apartment Management。（ Projects that require approval according to law， Business activities can only be carried out after approval from relevant departments）

Chinese Industry Category: Mechanical equipment

Chinese Industry Major Class: Special equipment manufacturing

Chinese Industry Middle Class: Other special equipment manufacturing

Chinese Industry Sub Class: Manufacturing of social public security equipment and devices