As for the daughter station, we have two types:  Mobile Station and Semi-mobile station.1.Mobile station integrates in a container hydraulic compressing system, PLC controller, pneumatic pumping cabinet, and dispensers. It integrates all functional equipment of a hydraulic daughter station on a wagon truck.2.Semi-mobile station gets gas via trailer that loads the cylinder storage on itself, but thecompressor , dispenser and other equipments are fixed at site 1. Station with mobility2. Hydraulic system instead of piston motion to pressed CNG3. Daughter station with compact structure