Qinchuan models CG-L-G1.6, CG-L-G2.5, CG-L-G4, CG-L-G6, CG-L-G10, CG-L-G16, CG-L-G25, CG-L-G40 are IC-card intelligent gas meters, which based on IC card as media, gas management system as platform, volume measurement as metering method, integrate with mechanical metrological, electrical metrological, electro-mechanical transformation technology,intelligent valve control technology and data safety management to achieve metering, intelligent control, IC card prepaid and meter management.

Qinchuan patented (CN102117519 B) IC card intelligent gas meter adopts to the dynamic key cryptography, which means the card ID, meter ID and software ID have to completely matching at each operation to guarantee the meter communication and information security. In regard to its leading technology, this product has been recognized as the international hi-tech leading products.

Valve is the most important component of intelligent gas meter which determines intelligent gas meter's quality and reliability. Qinchuan patent (CN101907194B) on bidirectional blockage-free gear-driven special electro-mechanical valve for gas meter, a special design on valve which solve the locked-rotor current problem of worm drive valve, minimize the open/close valve current to 40mA, limit the internal leakage of meter less than 10mL. All these parameters are highly superior of the international standards.