Nkwupụta gbasara ihuenyo Shale Shaker mere Kangertong Kangertong na-ekwupụta nke ọma na naanị anyị na-emepụta ihuenyo nnọchi mana ọ bụghị nke mbụ.● Derrick, FLC, Hyperpool, PWP, PMD bụ akara nke ụlọ ọrụ Derrick.● NOV Brandt, VSM, Cobra, King Cobra, D380, D285P na LCM bụ akara nke Va...
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