Welcome to YueQing HEYI Electrical Co,Ltd.HEYI, established in 2002, who specialized in research and design,manufacturing, and distribution of current transformers, a variety of split core current transformer ,mini current transformer Rogowski coils ,hall effect current sensor and related accessories. which is widely used in Smart Grid Industry all covering distribution,Saving&Protecting& Metering Electicty, and Power System.( With an emphasis on continuous improvement, innovation and high performance and cost-effective solutions) . we have one strong R&D and QC team continues to innovate new olutions, additions and extensions in the pursuit of not only meeting but exceeding market demand and to offer the very best solutions for our customers.HEYI mission is to provide reliable ,accurate and customized current transformer solution.HEYI vision is leading global split core CT manufacture and energy solution provider.HEYI Values Enthusiastic by our work, we offer a quality personal and close service to our customers.HEYI sincerely supply you with high quality products and high effect service, willing to start deep cooperation with you soon after!!