Shenyang Mingnan Electronics

& Our company focuses on R&D and production of anti-duplication elevator card swiping systems for residential areas. Over the years, users who have installed our company's access control and elevator card swiping systems have never been successfully cracked and copied so far. Our company's products fundamentally solve the problems of cracking and copying. Unlike other companieswhere there are loopholes in their products, they are fixed. This won't solve the problem. Our company's products can guarantee that if they are cracked and copied within one year and multiple cards can be used at the same time, we will provide a full refund. Product warranty year. Let you use the product with confidence. We hope that major dealers can contact us at any time if they are interested in our products. Taobao address: http://bdb/ Phone: [Details]