An ordered packing for {TAIL ~ mass transfer} and {HEAD ~ heat exchange processes} includes pre formed individual parts 
An ordered packing for { TAIL ~ mass transfer } and { HEAD ~ heat exchange processes } includes pre formed individual parts
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH