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A sprayer is a machine for dispersing liquids. It is a kind of spraying machinery. It is divided into agricultural, medical and other uses (such as industrial use). Agricultural use is classified as a plant protection machine for agricultural machinery. It is generally called the sprayer driven by human power, and the sprayer driven by the power (engine, electric motor). The sprayer is divided into hydraulic, pneumatic and centrifugal sprayers according to the working principle. According to the way of carrying, it is divided into handheld, backpack, shoulder, pedal, stretcher, cart, self-propelled, vehicle-mounted, suspended, etc., as well as aviation sprayers.

Measure the quality index of sprayer:

　　1, droplet size; constant, low volume and ultra-low volume　　

　　2, spray volume; 　　　　

　　3, spray range and range; 　　 the operating quality of a sprayer is not only related to the machine, but also related to the use technology (also called the application technology).