China tianjin Yingxun Technology Co., Ltd. is a high-tech company specializing in research and development and production of shield products. The main products are recording shield, brainwave shield, mobile phone shield, UAV shield, mobile phone signal amplifier, mobile phone signal intensifier, etc. The company invests a lot of money in technology research and development, completing the first hand-held recording shield in China, brainwave shield, test room wireless signal shield, the first electronic scale jammer shield, the first wireless microphone screen. Development and production of shield. In addition, the company also customized a variety of wireless signal shield products to meet the different needs of customers, technology is the basis of our forward, service to ensure our forward!