"Quality 1st, Honesty as base, Sincere company and mutual profit" is our idea, in an effort to create consistently and pursue the excellence for Ultrasonic Transducer Frequency, Hardness Reference Blocks, Digital Shore Durometer, Ultrasonic Flaw Detector In Physics,Rockwell Standard Calibration Block. For additional queries or should you might have any question regarding our goods, make sure you do not hesitate to call us. The product will supply to all over the world, such as Europe, America, Australia,Denver, Adelaide,Holland, kazakhstan.With the goal of "zero defect". To care for the environment, and social returns, care employee social responsibility as own duty. We welcome friends from all over the world to visit and guide us so that we can achieve the win-win goal together.