There are various types of Yamamoto Knapsack Sprayers that can be selected according to your needs. Some use a gasoline fuel pump engine, some use an electric pump, some have 2 usage functions, namely using an electric pump engine and a manual hand pump. Designed with a backrest that is safe and comfortable to use. It can be used for spraying fertilizers and agricultural pest control, can also be used for spraying disinfectant liquid.