In China, SM2, SM3, and SM4 are cryptographic algorithms that are part of the national commercial cryptography standard. SM3 is a hash function, while SM4 is a block cipher. These algorithms are widely used in various applications, including wireless LAN (WAPI) and TLS, and are also incorporated into international standards.

Overview of China’s Commercial Cryptographic Algorithm Standards
https://niccs.org.cn/niccs/Notice/pc/content/content_1937429502295019520.html

https://en.wikipedia.org/wiki/SM3_(hash_function)
https://en.wikipedia.org/wiki/SM4_(cipher)

https://crypto.stackexchange.com/questions/70548/what-are-the-advantages-of-sm3-and-sm4-compared-to-nist-approved-algorithms-sha