Innovated Dongfeng Automobile 4S shop adopts Winsom new architectural environmental protection product--- corrugated panel MC25C for ceiling decoration. The corrugated panel is composited by corrugated core and aluminum skin by Aviation Composite Technology.  It is a kind of cost effective metal ceiling. Compare with other metal ceiling (such as single aluminum sheet), it features light weight, high strength, good flatness and big panel size to manifest simple and grand design concept. Simple installation and demountable design makes easy maintain. High strength panel design, even to be installed and demounted many times, it still keeps in good condition.