lubricating oil flow meter have ISO9001,14001,28001 and Patent No.ZL 00 2 01624.9,small deviation, ... digital target flow meter is improved from traditional flow meters and can take place of them, such as turbine, electromagnetic, ... industry, chemical engineering, energy industry, food industry, environmental protection and water conservancy etc. Anti-interfere,anti-impurity,anti-acid,corrosion ...