The beneath strutting must level off and equilibrium if lie flat, not suitable too high.
The beneath strutting must level off and equilibrium if lie flat, not suitable too high.
若平放，底层支撑应平整均衡,码放不宜过高。
The beneath strutting must level off and equilibrium if lie flat, not suitable too high.
若平放，底层支撑应平整均衡,码放不宜过高。