We are a factory that produces the DRK312B Fabric Friction Charging Tester, also known as the Faraday tube. This device is used to measure the level of charge generated on fabrics due to friction. With a compact design and high sensitivity, our product is an essential tool for textile manufacturers to ensure the quality of their products. Our focus on precise measurement and solid construction ensures that each unit is reliable and provides accurate readings. Count on us for high-quality products that meet your needs.