... gloss black powder-coated 3.1.2mm thick pole retractable belt stanchions LG-21-A1 material: A3# steel, gloss ... materials---lanshi town.Several miles away from one of Chinese biggest steel material market---Lecong Metal Wholesale Market.display ... post, stainless steel stanchions, queue management promotional stand, belt stand, retractable belt post, queuen stanchion, queue barrier line post, retractable ...