We are Shandong Guomao Reducer based in Yantai, China. We are member of TradeKey.com since October, 2012. Our business is related to Industrial Machinery industry and we specifically deal in speed reducer, gear box, gear motor,. Please find our product details below: SWL/WSH electric worm gear screw lift screw jacks Screw jack is suitable for low speed and low frequency. Precision trapezoid screw pair and high precision worm-gears pair. Thank you for taking time to go through our business profile. If there are any questions, inquiries or comments, please feel free to contact us.