Bejing Richang-Science Instrument Transformer Equipment Co.,Ltd established in28/09/2011, is a professional manufacturer engaged in the research, development, production sale and service of Current Transformer/Voltage transformer/Power supply sensor/Zero sequence voltage sensor. We are located in Beijing with convenient transportation access. Dedicated to strict quality control and thoughtful customer service, our experienced staff members are always available to discuss your requirements and ensure full customer satisfaction. With more than ten years' development, our company has become competent to develop, design and manufacture a wider range of products. From high-voltage, to medium and low voltage products, which covers a range of 0.66~35kV in order to satisfy all clients requirements. Our leading products has earned 12 national patents, 2 of them belongs to innovation patents. In addition, We have completed a series of quality assurance system and adopted ISO9001:2008 quality management system certificate, ISO14001:2004 Environmental management system certificate, OHSAS18000(GB/T28001-2001)Occupational health safety management system certificate .Our business covers more than 30 proveniences, cities, and autonomous regions in China. We also export products to Europe, south-east Asia and African countries. We also welcome OEM and ODM orders. Whether selecting a current product from our catalog or seeking engineering assistance for your application, you can talk to our customer service center about your sourcing requirements.