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 site1. Station with mobility 2. Hydraulic system instead of piston motion to pressed CNG 3. Daughter station with compact structure