Sino Age Development Technology, Ltd. (SADT), is a leading manufacturer / supplier of measuring and testing instrument, specialized in NDT and quality control fields. We have our own HARTIP series portable hardness testers from the very begining. Now our main products cover portable hardness tester and bench type hardness tester, ultrasonic thickness gauge, roughness tester, handheld metallurgical microscope, portable vibration meter, optical tachometer, ultrasonic flaw detector and so on. Our main overseas markets are: USA, Canada, Germany, France, Netherlands, Finland, Italy, Czech Republic, Poland, Lithuania, Estonia, Serbia, Greece, Turkey, Australia, New Zealand, Korea, Taiwan, Singapore, Thailand, Indonesia, Malaysia, Vietnam, India, Pakistan UAE, Egypt, South Africa, Mexico and Columbia, Peru and etc. All products supplied by SADT have excellent quality and competitive price with our best service.