OOC is the most important parameter of verti G dryer. OOC, means oil on the cutting. In many countries, OOC should be reduced to a very low level, like 5%, 3% then discharge. 
GNCD930 is a hot sold dryer model from world top solids control manufacturer – GN Solids Control. After treated by GNCD930 verti G dryer, OOC can reduced to 5%. Similar to Brandt and CSI.