Central conveying system enables central processing and closed conveyance of raw materials. Completely eliminates noise, dust and hot air pollution. It is an ideal system to maximize productivity and to realize distant centralized control for one to more sites and increase production efficiency. Safe production environment & centralized dust removal; Lower noise; Decreases energy consumption; Decreases production cost; Promotes company image. Central control unit will be controled by PLC that made in foreign. With displays loading, switching on, and alarms for material shortage of every machine via programmed control. Vacuum valve, small and light, inner rubber fim installed to ensure airtightness, air suction circuit adopted to control closure and opening of air suction pipe. All sizes of customised s/s hoppers available.