GRH designs thiab ua hwj huam unit, kab nyob saum ntuj lub cev muaj zog, hydraulic iav twj / iav motors, mono-thaiv li qub, sectional pawg li qub, proportional li qub thiab txaus dividers .Cov Cheebtsam yog mas siv rau industrial Machineries, cov ntaub ntawv uas tuav, siv Machineries, ua liaj ua teb thiab muaj teb.