DM Systems (Beijing) Co., Ltd. is one leading company specializing in the research, development, manufacture, sales as well as service for medical device in the world. Its headquarter is located in California USA. with more than 35 years of experience in Electrocardiography product field. DM Systems (Beijing) Co., Ltd. has dedicated to provide high-tech medical products with international standard. Its products are highly acclaimed by customers in international market for competitive price, user-friendly, high quality, better reliability and outstanding performance. DM Systems (Beijing) Co.,...