SADT, is a leading manufacturer/supplier of measuring and testing instrument, specialized in NDT and quality control field. We have our own HARTIP series portable hardness tester since 1995. Now our main products includes hardness tester, ultrasonic thickness gauge, ultrasonic flaw detector, gloss meter, roughness tester, handheld metallurgical microscope, concrete test hammer and so on. Holland, Italy, Germany, Turkey, France, Ceska Republic, Korea, Singapore,India, Iran, South Africa, USA, Mexico and Columbia are some of export countries. All products supplied by SADT have excellent quality and competitive price with our best service.