Qingdao Add Value Flow Metering Co., Ltd. is located in Qingdao Free Trade Zone. It is a high-tech enterprise integrating R & D, production, sales and service. Since its establishment, Qingdao Add Value has always focused on the research and development and manufacture of fluid metering products. We have independently developed two series of products including Coriolis Mass Flow Meters and Vibration Tube Liquid Density Meter on Line, and have obtained national invention patents. The company has advanced equipment, established a complete production inspection process, and certified by ISO9001 and ISO14001. Currently, the Qingdao Add Value products are installed in most cities across the country. And they are widely used in various occasions such as quantitative loading automation and chemical process quality control in Sinopec, PetroChina and many major refineries. Stable and accurate fluid metering services have won unanimous praise from customers.