Kertong deklare solanèlman ke nou sèlman pwodwi ekran ranplasman yo men pa orijinal yo.Derrock, FLC, Hyperpool, PWP, Wave Screen se mak Derrock Corporation.NOV Brandt, VSM, Cobra, King Cobra, D380, D285P ak LCM se mak Varco I/P, Inc. MI SWACO, ALS-2, MD-2, MD-3, MEERKAT PT, ...
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