GRH tsim thiab tsim hluav taws xob chav tsev, lub cev muaj zog, hydraulic iav twj / iav motors, mono-block li qub, ntu pawg li qub, cov khoom siv li qub thiab cov dej faib tawm .Cov khoom siv no tsuas yog siv rau hauv kev lag luam machinery, khoom siv, kev tsim kho tshuab, kev ua liaj ua teb thiab kev lag luam. teb.