38 teeb tsa ntawm SS316 lub cev cov khoom cais tawm electromagnetic flowmeters thiab 6 teeb ntawm vortex flowmeters. Cov khoom tau npaj rau cov qhua tuaj noj mov thiab npaj tau ntim thiab xa khoom hnub 14 ntawm kev ua haujlwm rau txhua qhov khoom tiav
