YY6106-1 used the Metal wood grain technology, which can make the chair get the wood look and touch in a metal chair. Besides, YY6106-1used the Yumeya patented technology that can make the chair can stacked for 10pcs and there will be no any stacking marks left. The combination of the two technologies increases the utility of YY6106-1, and reduce daily operating costs. Used the tiger powder coat to make the wood grain color more realistic and long-lasting.