Guoou Instrument's new product, the 4th generation paint thickness gauge  flagship version is officially launched, continuing the 4th generation classic design, and the core functions have also been retained, such as measurement speed and accuracy, metal putty detection, iron galvanizing auxiliary identification and other functions. On this basis, the flagship version has upgraded the screen selection and added personalized boot interface customization. The biggest change is undoubtedly the power consumption method. It has a built-in high-standard rechargeable battery design, which has good characteristics in terms of lifespan and high and low temperature resistance.