Our advancement depends over the superior machines, exceptional talents and continually strengthened technology forces for Potassium ion analyzer test machine, Free Chlorine Meter Monitor Analyzer Controller, (NO2- ) Digital Pocket Size Nitrite Meter, Online Ultrasonic Sludge Level Sensor,Seawater Environment pH Electrode. Because we stay in this line about 10 years. We got best suppliers support on quality and price. And we had weed out suppliers with poor quality. Now many OEM factories cooperated with us too. The product will supply to all over the world, such as Europe, America, Australia,Liberia, Paris,French, Afghanistan.We only supply quality items and we believe this is the only way to keep business continue. We can supply custom service too such as Logo, custom size, or custom merchandise etc that can according to customer's requirement.