... Anping BaoSheng Wire Mesh Products Ltd,.BaoSheng steel grating is the largest steel grating manufacturer of China, with 11 sets of ... every year. Varieties of products including untreated/galvanized steel grating, Stair treads, Trench cover, Suspended ceiling. etc. ... the specificantions,sizes,quantities,and required surface treatment of steel grating.3. Give type and quantities of fastener.In ...