JRSS series worm gear screw lift (also known as jack); has the characteristics of compact structure and small volume; convenient installation and multiple forms; high reliability and long life; with lifting, lowering, and auxiliary parts to advance, flip and other functions ; It can be used as a single unit or multiple units. It has a wide range of power sources, which can be directly driven by electric motors or other power, or manually; it is usually used in low-speed and heavy-duty situations.It is widely used in various industries such as metallurgy, machinery, construction, water conservancy, medical treatment, and chemical industry.