... operation,computer control,noise-free design,auto-alarming protection for material short Hopper Drier Feature:1.Contact parts made of Stainless steel ... .Low noise blower, installed air filter (Optional) purity guaranteed.4.Material tank installed with side glass for inspection.5.Curve heating ... 1000E1000402200380/3Φ202x142x24850x50xΦ13.5680RO-1500E1500503000380/3Φ204x142x31950x50xΦ13.5800 Hopper Drier