Sharing-bike market developed rapidly in recent few years, specially in China. Sharing bike is getting more popular for several reasons: low cost compared to taxi, riding a bike as exercise, also it’s green and environment friendly, and so on.     Users can use APP on phone, scan QR code

Public locker is widely used in public places such as gym, school, supermarket and so on. Unlocking needs an electronic locks by scanning ID card or bar code. The movement of lock is implemented by a gearbox DC motor. In general, a worm gearbox is used for self-locking purpose. The

Electrically actuated valve is also called as motorized control valve, is specially widely use on gas valve. With a geared linear stepper motor, it can control gas flow precisely. It’s used on industrial production and residential devices. For residential application: It can be used on gas-powered vehicle to release gas