CNOOC Oilfield Services (Hainan) Technical Services Co., Ltd.

International Industry Category: Information transmission, software and information technology services

International Industry Major Class: Software and information technology services

International Industry Middle Class: Other information technology services

International Industry Sub Class: Other unspecified information technology services

For oil、 Exploration of natural gas and other geological minerals、 exploration、 Development and mining services； Geotechnical engineering and soft foundation treatment、Underwater remote-controlled mechanical operations、Pipeline inspection and maintenance、 Positioning and navigation、 Surveying and mapping services、 Data processing and interpretation、 Oil and gas well drilling、 Well Completion、 Gamma logging、 Oil and gas well testing、 cementing、 Mud logging、 Drilling mud preparation、 Wellbore perforation、 Core sampling、 Directional well engineering、 Underground operations、 Oil and gas well repair、 Oil well stimulation construction、 Bottom well sand control、 Tripping and lowering oil casing、 Filtration and underground accident handling services； Equipment related to the above services、 tool、 instrument、 Inspection of pipes、 repair、 Leasing and sales business； mud、 Cementing additives、 Oilfield chemical additives、 Special tools、 Mechanical and electrical products、 Instruments、 Development of perforating equipment for oil and gas wells； Electromechanical、 communication、 Chemical products（ Except for hazardous chemicals） Sales； For oil field exploration、 Development、 Production and provision of shipping services、 Anchoring operations、 equipment、 facility、 repair、 Loading and unloading and other labor services； Ships、 mechanical、 Sales of accessories for electronic equipment； exploration、 Development、 Production-matched technical skills training or external training services； Property leasing related to oil and gas exploration and development technology、 Import and export trade、 Product Processing、 logistics、 Remanufacturing（ Projects that require approval according to law， Business activities can only be carried out after approval from relevant departments）。（ Self-management of general business projects， Licensed business projects are operated with relevant licenses or approval documents）（ Projects that require approval according to law， Business activities can only be carried out after approval from relevant departments。）

Chinese Industry Category: Petroleum and Petrochemical

Chinese Industry Major Class: Oil and gas extraction

Chinese Industry Middle Class: Oil and gas production support activities

Chinese Industry Sub Class: Oilfield Services