About Us

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.