Yonsha produces Air Vacuum Pumps, Vacuum Generators, Basic Ejectors, Inline Ejectors, Multi-stage Ejectors, Compact Ejectors, Vacuum Lilters, Vacuum Valves, Vacuum System Controls, Vacuum Switches, Vacuum Components. Various types of vacuum generators can be used to generate the vacuum. Basically, a distinction is made between the following: a. ejectors b. vacuum pumps c. vacuum blowers. Each of these generators has its specific advantages, but one principle is common to all types: high suction capacity together with high vacuum always incurs high energy consumption and thus high operating costs.