- Scope of application: Widely used in ship hull assembly and welding in shipyards, joint tightening of high-voltage transmission lines in the power sector, lifting and loading of trucks, material bundling, and vehicle pulling in the agriculture, forestry, and transportation sectors, as well as equipment installation and calibration in factories and other departments.

- How to use: Before use, check whether the chain, hook, transmission and brake are normal, and check the nameplate to confirm the rated load. During operation, first position the hook and conduct a trial lifting. After confirming that it is correct, pull the lifting handle clockwise to perform the lifting operation. When lowering, pull the handle counterclockwise and the speed should be slow.

- Maintenance: After each use, the dust and oil on the surface of the chain should be cleaned, and special anti-rust grease should be applied. The braking system should be checked monthly, the scale in the ratchet groove should be removed, the braking sensitivity should be tested, and key components that have reached the limit of wear should be replaced in time.