Minimum quantity for "Non-magnetic drill collar" is 1.
Minimum quantity for "Oil drill pipe" is 1.
Minimum quantity for "Spiral Drill Collar" is 1.
Minimum quantity for "The geological drill pipe" is 1.
Minimum quantity for "Water well drill pipe" is 1.
Hebei longway petroleum equipment Co., Ltd. Is a professional petroleum equipment manufacturing enterprise integrating the design, manufacture, testing and maintenance of oil d...
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