Shenzhen Calibeur Meausrement Co,ltdWe are the largest meausre DIY TESTER manufacturer in China, included in our extensive line of home improvement items are Alcohol Breath Tester, Ultrasonic Distance Measurer ,Metal/voltage/stud Detector, Home swimming pool water tester, Digital pressure Gauge, Digital Angle meter etc.Run by the most advanced ERP system and under the supervision of ISO9001:2000 of TUV Reinland,all of our products comply with CE,GS,R&TTE,FCC,and the latest ROHS regulation of the EU.If u have interests,welcome to contact with me .Contact person: Frany lei