Xi'an Haicheng Petroleum Technology Co., Ltd.

International Industry Category: Mining

International Industry Major Class: Mining professions and auxiliary activities

International Industry Middle Class: Professional and auxiliary activities in the field of oil and gas extraction

International Industry Sub Class: Professional and auxiliary activities in the field of oil and gas extraction

Oil and water well maintenance（ Except for licensed items）； Environmental Protection Engineering； Oilfield testing technical services； Drilling equipment rental and sales； R&D and sales of downhole tools； General machinery and equipment leasing and sales； Electronics、 electrical equipment、 Oilfield testing equipment、 Chemical products（ Except for flammable and explosive dangerous goods）、 Building Materials（ Wood removal）、 Sales of firefighting equipment； Chemical tracer monitoring（ Except for licensed items）； Water quality monitoring and analysis（ Except for licensed items）； High-pressure physical property sampling and monitoring analysis（ Except for licensed items）； Oil and gas field engineering and technical services； Electronic Instruments、 Research and development of electromechanical equipment、 Production and sales； Production and sales of electronic pressure gauges； Design and construction of mechanical and electrical equipment installation projects； Maintenance of mechanical equipment、 Instruments； Import and export of goods or technology（ Except for the import and export of goods and technologies that are prohibited by the state or involve administrative approval）。（ The above business scope involves the licensed business items， Operating within the validity period with a license or approval certificate， No business without permission）

Chinese Industry Category: Mechanical equipment

Chinese Industry Major Class: General equipment manufacturing

Chinese Industry Middle Class: Instrument Manufacturing

Chinese Industry Sub Class: -