The hoisting block is an important hoisting tool. It has a simple structure and is easy to use. It can change the direction of the pulley and the pulley group pulling the wire rope many times and lift or move the moving objects, especially the pulley group composed of the pulley combined with the hoist. , masts or other lifting machinery, widely used in construction and installation operations. The product specification ranges from 0.03-320T, the gear train ranges from single wheel to pick-up wheel, and the hoist has four types: hook, chain ring, hanging ring and hanging beam, which can be selected by users.