On November 21, Gelonghui reported that ledman optoelectronic (300162.SZ) stated on the investor interaction platform that the company's products have been widely used in specialized display markets such as security, monitoring, command, scheduling, datacenter, as well as in commercial display markets like smart conferences, smart education, exhibitions, broadcasting, media, and in household display markets represented by giant cinemas and giant living rooms, including broadcasting media related businesses.