Guangzhou JUAN JUAN Electronic Technology Co., Ltd. is a Chinese leading supplier of monitoring instruments, PH meters, thermometers, humidity meters, acidity meters, salinity meters, ORP meters, refractometers and water test strips. JUAN JUAN is our own brand and we have our own factories. We can offer you products of high quality and great price and a variety of styles products which have wide application range and high accuracy. We have a strong supply capacity and our own warehouses in Russia Brazil, and Ukraine, so we can deliver goods efficiently and quickly. If you need more information, do not hesitate to contact us, we will be happy to answer all your questions and help you start working together with us.