DM Software Inc. USA (DMS) headquarter is located in California USA, a company that Mr. Bill Parsons built in 1975 specializing in Electrocardiography product. DMS and its product have been approved with FDA Certificate, CE Certificate, ISO9001 and ISO13485 Certificate.For 30 years since its founding, DMS has dedicated itself to the research and development of Electrocardiography product. DMS cooperates with USA or European ECG specialists and provides series of advanced and reliable Holter products. From Model Premier I to Premier 12 (CardioScan 12) Holter, every version is the representative of most advanced Holter product. DMS is the first company that uses personal computer to do Holter replay and analyze.Â DMS has owned Holter analysis techniques for 30 years, and has a lot of experience in about 100,000 hospitals globally and about billions of illness cases. We exceeded other Holter company analyze techniques a lot, especially has the unique technique in identification of false difference. The analyze techniques of DMS is the most advanced analyze techniques in the world. And thanks to the unique Holter analyze techniques, the Multifunction PC-ECG system, Stress Test ECG System, Multi-bed Telemetry ECG Monitoring System, Mobil ECG System of DMS are also famous for their steady, efficient and accurate performance in the industry.