Sino Age Development Technology, Ltd. (SADT), established in 1993, is a leading manufacturer for measuring and testing instrument, specialized in NDT and quality control fields. We have our own HARTIP series portable hardness testers since 1995. We are professional producer with ISO 9001 quality system. Most of the products are applied with CE certificate. Now our main products cover hardness tester, ultrasonic thickness gauge, concrete test hammer, gloss meter, colorimeter, roughness tester, metallurgical microscope, ultrasonic flaw detector and so on. We have exported our products in batch quantity to overseas market since 1996. Our main overseas markets are: USA, Canada, Germany, France, Netherlands, Finland, Italy, Czech Republic, Poland, Lithuania, Estonia, Serbia, Russia, Greece, Turkey, Australia, New Zealand, Korea, Taiwan, Singapore, Thailand, Indonesia, Malaysia, Vietnam, India, Pakistan, Iran, 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.