We retain improving upon and perfecting our items and repair. At the same time, we perform actively to do research and progress for Three-Phase Passive Leakage Current Tester, Dc Regulated Power Supply , Led Digital Voltage Tester , Range (Ac / Dc) 500v ~ 20kv Voltage Tester ,Rek 500v 600v 1000v Ac/Dc Insulation Resistance Teste . Safety as a result of innovation is our promise to each other. The product will supply to all over the world, such as Europe, America, Australia,Zambia , UK ,Kuwait , Sheffield .We will supply much better products with diversified designs and professional services. We sincerely welcome friends from over the world to visit our company and cooperate with us on the basis of long-term and mutual benefits.