The discovery of oil storage blocks through exploration refers to the use of special equipment and technology to drill cylindrical holes with a certain diameter down or on one side at the pre...
Rugao Yaou Import & Export Co. LTD was established in 2004, which was among the earliest trading companies strongly supported by Ministry of Foreign Trade and Economic Cooperation. Through the...
The bit is directly broken part of the rock, its shape, structure, material, processing technology, etc. directly affect the crushing effect and the life of the bit. The drilling requirements for the...
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