DF - 30/40 pneumatic polyurethane foaming system is a upgrade product of existing spraying equipment, its main advantages  are that the host heater is composed of 8 heat sticks of  1500 w, which can overcome the disadvantage of the traditional spraying equipment can not be operated under lower temperature and larger raw material viscosity; double-cylinder is selected on host to guarantee better spray atomization effect, more stable pressure; the increased host booster pump improves 50% of construction efficiency of equipment, increase the rate of raw material. This equipment is the existing spraying equipment with technology-leading both in and out board for construction