Explosion -proof hand pinoscoules pay attention to pre -use inspections, mainly include the transmission part, the lubrication of the chain, and the braking performance. Choose the right hand to stract the gourd, and you must not hang it overload. The explosion -proof hand stubborn dumplings are strictly forbidden to hang heavy objects on the tip of the hook. It is forbidden to hold the heavy objects and pull it. Keep the chain smooth in use, and it is strictly forbidden to use it. During the lifting process, the stations are prohibited or walking under the heavy object.