Product name: NEP-2000 Backpack ULV Cold Fogger Large spray volume, high efficiency and time saving. Portable design, save medicine, more convenient to use, spray distance can reach 19.7 - 32.8 ft. - Powerful high speed spray, fast diffusion, strong penetration, save labor. - Using the anti-corrosion medicine box, the body of PP engineering material, strong and durable. - The fine and atomized flow can be arbitrarily adjusted, and the adjustable screw allows you to easily change the flow of the used smoke machine in half. The average particle size is 20 microns, which is an ideal atomizer to meet the needs of ULV spraying. Scope of application: fumigation of hotels, hotels, large shopping malls, restaurants and homes; disinfection; disinfection of hospitals, schools, theaters and other public places; cars, trains.