Ọmụma nka nka

Aug 16th ruo Aug 17th, Oilbayer sonyere na ụlọ ọrụ ọkọlọtọ nke "Oil Well Cement Performance Requirements" haziri nke National Oil and Gas Standardization Committee Drilling Engineering Sub-Technical Committee na Yichun City, Heilongjiang Province, ma sonye na mgbanwe nke cementing metụtara ya. teknụzụ.
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Oge nzipu: Sep-10-2018
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