Gronghui May 23 丨 Tianhe Defense (300397)(300397slotsoffortune.SZ) said on the investor interaction platform that the company independently researched and developedslotsoffortuneThe single-sided circuit technology of glass substrate has been implemented in outdoor high-reliability optoelectronic glass products. The independently developed carrier board additive film has been experimentally verified that it can be used upstream to fill holes and add layers of glass core cores, and downstream to Mini/Micro LEDs and carrier boards.