... Expo 2010.HK-J2.5H membrane is a volumetric gas meter diaphragm gas meter. With beautiful shape, small size, light weight, ... diaphragm gas meter".HK-J2.5H household gas meter gas meter is the ideal phenotype, mainly for gas, natural gas, liquefied petroleum gas and other gas ... offer the models likeIC card gas meter, Intelligent gas meter, Remote control and Prepaid gas meter. G1.6, G2.5, G4.0 G6.0 ...