commercial IC card gas meter 1, Large flow, industrial gas meter; 2, Application: natural gas, liquid petroleum gas and coal. commercial IC card gas meterFeature:1, very ... data;5, machinery counter display the accumulate gas, liquid-crystal display the surplus gas;6, safe and reliable;7, steel ... :0.01M3Meter lifespan:>=15 yearsStandard: GB/T6968-1977<Diaphragm gas meter>. commercial IC card gas meter