UKertong umemezela ngokuzithoba ukuthi sikhiqiza izikrini ezishintshayo kuphela kodwa hhayi ezangempela.I-Derrock, i-FLC, i-Hyperpool, i-PWP, i-Wave Screen izimpawu ze-Derrock Corporation.I-NOV Brandt, VSM, Cobra, King Cobra, D380, D285P kanye ne-LCM izimpawu ze-Varco I/P, Inc. MI SWACO, ALS-2, MD-2, MD-3, MEERKAT PT, ...
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