The screw jacks are Widely used in machinery, metallurgy, construction, irrigation, chemical industry, health care, culture, health and other sectors. Approved by many mechanical engineers and the mechanical designer with positioning accuracy, completely self-locking fluctuation.small volume,easy installation, the use nimble, broad power to supply, low noise, long life, security and environmental protection and so on characteristics .welcame by domestic and foreign customers. The products can be customized by customers.