Nanjing Lishui Electronics Research Institute was founded in 1979, focusing on the research of industry automation and DC motor timing. Since 1997, we have concentrated on the drive techniques of brushless motor for electric vehicles. As the first company which manufactures and sells ebike controllers in China, we have accumulated rich practical experience in R&D and production over the last ten years. Up to now, our global sales has exceeded 4 million units including 1000 different variations on products., which have successfully met the requirements of over 600 customers in China, EU, US and worldwide. We keep "Quality, Speciality, Integrity" as our core values. Quality control is strictly implemented within every stage of product development and production process, which assures the quality, reliability and performance of our products We have passed CE, RoHS, and other required certifications We spare no effort to solve the problems our customers encounter with our products and we value customer feedback to make our products better. We also win frequent praises for the accurate and efficient communication from our overseas customers. Our investment on R&D and focus on market needs have enabled us to achieve technical advance in many areas and receive tens of domestic and international patents. Our featured products are high quality exportation controllers, heavy load tricycle controllers, and high power controllers above 3kw. Over ten years' experience has also endowed us with high efficiency on controller customization. We build to suit your needs.