... , GOST, ISO9001, ISO14001, OHSAS18001;10.2010 TOP 50 Product of China Construction Machinery;11.2011 TOP 50 Product of China Construction Machinery ... the operation stability;5.The optimized flights structure of drying drum makes the drying system more effective and stable;6. The ... RAP facilities;9.Bag filter is being placed on top of drying drum,it reducing heat loss,thus saving fuel cost and ...