Shenzhen HSY Security Tech Co., Ltd. was established in 1998, which is one of the leader professional suppliers with hi-tech in Shenzhen of China, specialized in manufacturing RFID smart cards, RFID readers, RFID & Biometric time attendance and access control security solution systems products. What We Do: 1. Professional R&D department, offers you the OEM/ODM service; 2. Technique team supports you to solve the testing issues and tells you more information about security system solution; ...