Super Junior-M (Korean: 슈퍼주니어-엠), often referred to as SJ-M, is the third official sub-unit of Korean boy band Super Junior. They are the first international music group in the Chinese music industry to have members of both Chinese and Korean descent, and are also the first group produced by Korea's CT (Culture Technology) organization, created through a comprehensive localization strategy. Super Junior-M consists of Super Junior members Donghae, Siwon, Ryeowook, Kyuhyun, and two non-Super Junior members, Henry and Zhou Mi.
Super Junior-M's first album "Me" will be released in China in mid-April. It will also be released in other Asian countries including Korea, Taiwan and Thailand. All of the songs in the album are performed in Chinese. The album contains a total of 12 songs. In addition to the five new songs, the album includes the title song "U," "Don't Don" and "Marry U." I
Prior to their official debut, Super Junior-M unveiled a teaser video of all seven members on http://www.sohu.com on April 3. More than one million Internet users downloaded the video in just five days. The music video of the group's title song "U" was also unveiled to the public on April 8. On the same day, the group performed at an annual music awards ceremony held in Beijing.
In December 2009, Han Geng returned to China to pursue a solo career and the group's activities were halted. In December 21, 2010 the Seoul Central District Court ruled in favor of Han Geng. A representative of SM Entertainment said that they will file an immediate appeal to reverse the decision. SM Entertainment have yet to release statements regarding his official status with the group.
In February 2011, Super Junior members Sungmin and Eunhyuk were added to the subgroup.