533 construction characteristic the construction uses the high quality T=0.6MM galvanization steel plate to make and the kneading board coordination completely may the USB module pretage, used left side bar AGP+ which might choose and match to lead the wind cable channel conveniently to lead the air hose + in-line 12.5&13.5 square shape to lead wind cable channel plate AGP+ in-line to lead right side bar in-line plate