1. The shock absorber shall be arranged symmetrically with respect to the center of the pump device.

2. The arrangement of the shock absorber can be clockwise or counterclockwise. When the unit shock absorber has six mounting points, four of them are mounted on the four corners of the inert block or steel frame 4.

3. The other two should be placed on the long sideline, and the position should be adjusted to make the compression deformation of the shock absorber as consistent as possible.

LEGO, the English name Lego, is generally defined as a plastic building block toy.