SDAR is a professional instrument manufacturer located in Songjiang National ranked Industrial Park, Shanghai, China. Founded in 1987 in Wenzhou, and removed to Shanghai in 2002, SDAR has a long history of 22 years. Our OEM & ODM customers cover areas of America, Europe, South America, Japan, Korea, India and other nearby countries in Asia. SDAR is the first manufacturer in China to bring in and produce American inside-magnetism meter. Our product line includes: Intelligent Multimeter Digital Multimeter Analog Multimeter Digital Clamp Meter Analog Clamp Meter Insulation Resistance Tester Educational Meter Battery Tester Testers Panel Meter. SDAR factory occupies an area of more than 10000 s.q. m in Songjiang National ranked Industrial Park, Shanghai. In the past 22 years, SDAR has developed an efficient and steady team. SDAR aims to provide valued customers top-quality products with most competitive price.