Rui Du Mechnical and electrical(shanghai) co., Ltd located in Shanghai, China, was founded in 2004 and moved to Shanghai pilot Free Trade Zone in 2015 with good developing and growing. Our test and measurement equipments for electric power industry has been developed and manufactured under the trademark "Wrindu" and all of them have passed the International Quality Certification System ISO9001. Our typical customers are electric utilities, electric maintenance servicing and manufacturing companies as well as transportation and mining industries. We have cooperated with Pakistan in the Middle East, Ethiopia in Africa, Rwanda, Cuba in South America and Bolivia in many large projectsMain Products:- Transformer Tester- Transformer Oil Tester- Circuit Breaker Tester- Relay Tester- Other High-voltage equipmentsThe price list and additional information on delivery terms can be directly via the e-mail: sales@rdmesh.com.Our success is solely based on extensive research, competitive price with good quality and excellent service.