After using a hand chain hoist, it is necessary to clean the surface dust, regularly lubricate the chain and hook, and check for wear. There are also issues with internal parts wearing out and corroding, which need to be dealt with promptly. Additionally, avoid dropping or bumping it, as this may cause the internal gears to loosen, which should be noted. For outdoor work, protection from rain and wind is required, and overload must not be exceeded, vertical lifting is prohibited, and regular cleaning is necessary. The power source: It operates by pulling the manual chain (looped chain) vertically through human force to drive the internal gear mechanism, thereby lifting heavy objects with the lifting chain. Operation method: The operator stands on the ground or at a fixed position and pulls down the hand chain, causing the heavy object to rise and fall accordingly. Note that do not overuse it.