Dandong Huatong Measurement and Control Co Ltd is located in the high-tech park of Dandong Lingang Industrial Park. The Liaoning province software company was among the first group of enterprises recognized under the national standards. Its leading product is the PDM series intelligent monitoring system, and products have independent intellectual properties. It has five national software copyrights and nine patents. Four products are recognized as high-tech products, and five products are confirmed as software products. The company has multiple 5/10,000 precision program control reference power sources, a DSP development system and platform, an electric power automatic software testing platform and first-class SMT production made by Panasonic of Japan. They ensure the stability of product quality and enable the company to lead the country in all technological indexes for its product lines.