First, the use of stainless steel hand stains is not allowed to use stainless steel hand. The larger the weight, the larger the inertia, and the shaking will occur, and the overload will also cause damage to the stainless steel hand pour parts. The overload of heavy objects will cause shaking, and severe items will cause heavy objects to fall, which threatens the personal health of the operator. Second, when the cargo is hoisted, you must not be crooked or allowed to generate offset in the middle of the hanging, and can only be lifted vertically. Candida heavy objects can lead to the middle instability, and also increase the load pressure, causing the heavy objects to shake during the lifting process. Third, the staff should pull the zipper at a uniform speed when using stainless steel hand gourds. It cannot be slowly slow. This will not only shake the cargo back and forth, but also damage the period of use of the chain. The quickly pulling the chain when tilted heavy objects will also cause heavy objects to shake. Users should pull the chain at a uniform speed to slow the heavy objects slowly tilted and avoid damage to the heavy objects.