Yuantai Derun workers are off duty

The Yuantai Derun workers are off-duty - with a “Chinese triad“ vibe! Ha ha! #yuantai #yuantaiderun #steelhollowsection #steelboxsection #steelpipe #steeltube #squaresteelpipe #rectangularsteelpipe #circularsteelpipe #squarehollowsection #rectangularhollowsection #circularhollowsection