BeiJing YaTongKeYi Technology Co., Ltd was established in 2008 by a group of non-destructive testing industry for over 10 years to create the composition. Two years, the company has developed and produced in hardness; ultrasonic thickness; coating thickness; ultrasonic flaw detector; roughness five series of dozens of products. Widely used in military, aerospace, nuclear power, research institutes, universities, petroleum, chemical, metallurgy, heat treatment, pressure vessels, machinery, automotive research and other industries.