In the Environmental Protect field, we design many type of water analyzer products, most of them is industry grade water online monitor, e.g. PH & OPR Analyzer, Conductivity Analyzer, Dissolved Oxygen Analyzer, Luminescent Optical Dissolved Oxygen Analyzer Meter, Acid Alkali Concentration Meter, Residual Chlorine Analyzer Monitor Meter, MLSS Suspended Solids Sludge Concentration Meter, Turbidity Monitor Meter, and some depth & level meter for sludge or water.