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Hoist machinery is often in intermittent motion, and always in the working status of starting, braking, forward and backward running; Although the speed is not high, but it often bears heavy load; Most of them work continuously under harsh environment such as dust or seawater corrosion for a long time. The whole series of TWB products have decades of successful supporting experience in domestic and foreign customers. They are used in gearbox, running mechanism, lifting mechanism, luffing mechanism and swing mechanism etc. They have the characteristics of high bearing capacity, easy maintenance, long life etc. which can ensure the efficient, continuous and reliable operation of client equipment.