The business keeps to the operation concept "scientific management, premium quality and efficiency primacy, customer supreme for Temperature and relative humidity sensor, Co2 Probe , Portable Methane Detector , Co2 Module ,Ss Strainer Filter . 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,Puerto Rico , Latvia ,Pretoria , Estonia .Why we can do these? Because: A, We are honest and reliable. Our items have high quality, attractive price, sufficient supply capacity and perfect service. B, Our geographical position has a big advantage . C, Various types: Welcome your inquiry, It might be highly appreciated.