MDP 400 2SB/ 500/2SB/ 600 2SB  Double chambers vacuum packaging machine can complete the set programs of vacuum extraction, gas flushing (optional), sealing, printing, cooling and exhaust automatically. The products after packing can be prevented from oxidation, going mould, insects or getting damp, thus can be kept fresh for a longer time. Double chambers vacuum packaging adopt “BUSCH” vacuum pump.