... me, best quality and price here! 1.Species: Metallic structured packings include perforated &corrugated plate,corrugated plate gauze ... capacity,low fluid resistance,and heat&corrosion resistance,metallic packings include carbon steel or stainless steel applied ... easy carbonized materials in the vacuum rectifying towers. 3.Metallic structured packingName TypeSurface aream2 /m2Free volume%Bulk density ...