... ceramic, plastic, metals, it is a brand-new packing. The patent is recevied in 1998. The products ... function better then common packings. Usage: chemical, petrochemical, fertilizer, sulfuric acid, fine chemical, medicine, environmental protection etc. The ... chemical refinery. Item Material Size mmD×H×δmmmSpecific aream2/m3Void volumem3/m3Number per volumen/m3Bulk densityKg/m3Drying packing factorm ...