Our History KairDa Group Corporation was established in Dec. 2010,The first surface roughness tester manufacturer in China.After over 8 years of unremitting efforts,Our products include Surface Roughness Tester,Ultrasonic Thickness Gauge,Coating Thickness Gauge,Portable Hardness Tester,Ultrasonic Flaw Detector. Meanwhile,We provide superior Bench Hardness Tester,ultrasonic flowmeter,Vibration Meter,Infrared Thermometer,Concrete Testing Gauge,Colorimeter and Gloss Meter for our customer home and abroad.