AT & T Corporation of the United States recently announced the implementation of AirGig program to transmit high-speed wireless communication data using existing transmission lines without the need to set up a new communication infrastructure, which will greatly reduce the universal cost of wireless communication and may be used for 4G and future 5G wireless communication. Low coverage of wireless communications and other developing countries is of great importance. This plan is expected to be field tested in 2017. The company has filed patent applications for more than 100 of its technologies. At the heart of the approved patent is a low-cost plastic antenna mounted on a medium-voltage transmission line that wirelessly receives power and transmits modulated millimeter-wave signals. The device can be flexible networking with small cell or distributed antenna system, successfully solve the "last mile" home problems, without setting up a new fiber optic cable or communication base station. In addition, this unit can also generate benefits for grid users by monitoring the location of the fault in the grid and integrating it with smart grid applications. At present, millimeter-wave technology is the focus of 5G wireless communications research and development in the United States. In addition to AT & T, Google, Facebook and other Internet giants have also invested in millimeter wave wireless communications technology research and development. In July 2016, the US Federal Communications Commission established rules to allocate nearly 11 GHz of spectrum resources in the millimeter-wave (above 24 GHz) frequency band for future 5G wireless communications and hopes the United States will continue to lead the global communications industry. Industrial 3D Printers/Sand 3D Printers/Binder Jetting Additive Manufacturing Guangdong Fenghua Zhuoli Technology Co., Ltd , https://www.fhzl3d-pequip.com