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Gripper for bars has two jaws with hard metal elements or protuberances, guide, springs, hydraulic cylinder drive and linkage?keyword=Gripper for bars has two jaws with hard metal elements or protuberances, guide, springs, hydraulic cylinder drive and linkage?keyword=Gripper for bars has two jaws with hard metal elements or protuberances, guide, springs, hydraulic cylinder drive and linkage?keyword=Gripper for bars has two jaws with hard metal elements or protuberances, guide, springs, hydraulic cylinder drive and linkage 专利,更快更准确