... 1979,at the begining our company named as Qinfeng Flow meter.we are the professional manufacturer of flowmeters,thermometers,liquid ... LZB/LZJ(-F)glass tube flow meter,LZB-W(B)micro type glass tube flow meters,G.R.F10/20 ... structure, good looks, easy installation and maintenance All flow meters can be equipped with limit switches Technical Parameter ... )L/min(5~45)L/min Details:Gas Calibration equipment: