Zhengzhou yuanzhi electronic technology corp Ltd. has been a company which combines the research and development, production, and marketing of the security product --- amperet, an anti-shoplifting system since 1998. We primarily produce the 58KHz standard acoustic magnetic product (am), which is one of the rare products with the intellectual property right around the world, and the 8.2MHz standard wireless radio frequency product (RF). They are widely used in the retail industries such as shopping mall, drugstore, cosmetic retailing, bookstore, and video shop.