China Shaanxi Hainaisen Petroleum Technology Co.,Ltd company news

Under the guidance of the National Development and Reform Commission, the China Comprehensive Energy Service Industry Summit Forum series sponsored by the China Comprehensive Energy Service Industry Innovation and Development Alliance was held in Beijing on the 27th, aiming to create a comprehensive ... Read More

Oil drill bit is an important tool for oil drilling. It is used for drilling oil when drilling oil. The quality of its working performance will directly affect the drilling quality, drilling efficiency and drilling cost. The design of oil drill bits is mostly based on practical experience, combined ... Read More