When using electric gourds, be careful not to use it overload. Before applying, check the chain whether there are bad phenomena such as twisting, knotting, and accumulation. The lifting chain must be suspended vertically. The lifting chain and the hook must not be turned over wrong. , Make the promotioner work normally. It is forbidden to stay and pull, and it is strictly forbidden to walk and stay under heavy objects or nearby. Before use, you must check whether the braking is reliable, and check whether each component is normal, and there should be no looseness and oil leakage.