[Changxin Technology: The sixth-generation technology platform DRAM based on 4F² architecture has completed the verification of engineering samples] On October 31, Changxin Technology revealed at the third quarter performance exchange meeting on October 30 that based on the key breakthrough of the 4F² vertical channel DRAM (dynamic random access memory) architecture, the sixth-generation technology platform has completed the verification of engineering samples. Changxin has previously introduced the progress of the 4F² architecture at academic forums. This is the first time that Changxin announced that the sixth-generation process technology platform is based on the 4F² architecture. According to industry practice, the completion of engineering sample verification means that the platform's core performance indicators have reached design expectations on real wafers, and it can enter the large-scale mass production stage after the client completes the verification. (The Paper)