Only one steel plate can be lifted at one time. It is not allowed to lift the double steel plate and other objects above the steel plate at the same time.

When lifting operation, be sure to insert the clamp to the end, until the steel plate touches the inside and outside wall of the clamp in time.

In the whole process of lifting, it is forbidden to lift the steel plate to suffer impact and impact.

The whole hoisting process should be as stable as possible, and no one should stand on the bottom of the object.

Every use should be detected around each part of the abnormal phenomenon, manual jack company such as clamp body welding cracks. Hole or shaft deformation and rotation parts scratch. Rust and broken teeth, etc.

Once the mark is lost, it should be replaced immediately to prevent misuse. Should adjust the cross-clamp position again. Special jack company is paying attention to the situation that there is no pillar of the material, then the Angle of intersection between the steel plate and the plane can not exceed 5, otherwise you must reinstall.

Storage position should avoid corrosion and damage to the surface of the horizontal pliers paint.

Long-term use should be in each theme activity place besmear with plant grease, other place coating paint.