... indication are made of high-purity quartz tube UGS series color quartz glass level meters with performance of on site indication ... of flowmeters,thermometers,liquid level meters,transmitters and so on.The main products are contain of LZB/LZJ(-F)glass tube flow meter, ... 30 glass tube flow meters,LZZ/LZD(-F)metal tube flow meters,organic panel type pure water flow meters,UHC magnetic flap liquid level ...