... metal, and ceramic, including Pall ring, Tellerette packing, VSP packing ring, rasching ring, Ladder ring, Wire gauze packing,1.Metal pall ... great, high efficient, comparing with other pall ring, HYPAK filling has lower pressure reducing and higher efficiency, and liquid ... great, high efficient, comparing with other pall ring, HYPAK filling has lower pressure reducing and higher efficiency, and liquid ...