Yes, Huawei has introduced seven nanometer chips. In 2019, Huawei released the Kirin 990 chip based on the 7nm process, which is one of Huawei's most advanced chips to date. The chip uses TSMC's 7nm EUV process for higher performance and lower power consumption. In addition, Huawei also plans to launch more chips based on the 7nm process in the future to meet the growing market demand. Therefore, it can be said that Huawei has taken a leading position in the field of seven-nanometer chips.
As of 11:12:21 on September 12, 2023, Huawei has not yet launched a seven-nanometer chip. However, Huawei has been actively developing new generation chip technology and has launched several advanced five-nanometer chips such as Kirin 9000 and Kirin 9000E in the past few years. Huawei's research and development strength in the chip field is well recognized, so we can expect that Huawei may introduce seven-nanometer chips in the future to further enhance the performance and efficiency of its products.