Sino Age Development Technology (SADT) is a leading manufacturer of measuring and testing instruments, specializing in NDT and quality control fields. We have had our own HARTIP portable hardness testers from the very beginning. Now our main products cover portable and bench type hardness testers, ultrasonic thickness gauges, roughness testers, metallurgical microscopes, portable vibration meters, optical tachometers, concrete hammers, colorimeters, ultrasonic flaw detectors and Brinell hardness reading automatic measuring systems.Our main overseas markets are the USA, Canada, Germany, France, the Netherlands, Italy, Finland, Czech Republic, Poland, Lithuania, Estonia, Russia, Serbia, Greece, Turkey, Australia, New Zealand, Korea, Taiwan area, Singapore, Thailand, Indonesia, Malaysia, Vietnam, India, Pakistan, Iran, the UAE, Egypt, South Africa, Mexico, Colombia, Chile, Brazil and Peru. All products supplied by SADT have excellent quality, competitive prices and the best service.