LED通信:凸版印刷、LEDで大容量無線通信 – 通信ケーブル不要: LED comm: Toppan Printing, large capacity wireless comm with LED – without cable: LED通信:凸版印刷,LED大容量无线通信 – 无需安装通信电缆 2018年10月31日By Tokio X'press LED, Communication