Established in 2000, Zhejiang Yongtailong Electronic Co., Ltd. is located in the center of Shanghai, Hangzhou and Suzhou cities. YTL is a professional China YTL DEM4A MAX 100A DIN rail ThreePhase 4 Module four tariff CE RoHS MID B+D Approved Electric Energy Meter Suppliers and YTL DEM4A MAX 100A DIN rail ThreePhase 4 Module four tariff CE RoHS MID B+D Approved Electric Energy Meter Company. With more than 20 years of energy metering experience, we devote ourselves to providing competitive projects and creating value for customers. YTL was one of the first companies in the domestic market with which had an internal R&D department as well as international sales business. Since our foundation in 2000 we have grown to a manufacturer which complies and meet to many specifications from our national and international partners. At present our export volume makes us a leading company for technology and product export to more than 50 countries throughout the world. With provincial high-tech enterprise R&D center, YTL is the Top 100-enterprise with most investment value in Zhejiang. And“Yongtailong”is the famous brand of Zhejiang. For any new products of customers, we will communicate with customers very professionally, listen to their opinions and give useful suggestions to ensure that excellent quality products are made.