China's Visa Authorities are: 

(1) Chinese diplomatic missions, consular posts, Office of the Commissioner of the Ministry of Foreign Affairs in the Hong Kong Special Administrative Region, Office of the Commissioner of the Ministry of Foreign Affairs in the Macao Special Administrative Region, and other resident organizations abroad authorized by the Ministry of Foreign Affairs are responsible for handling visa applications by foreign citizens for entry into and transit through mainland China and the Hong Kong Special Administrative Region of China.  

(2) The Ministry of Foreign Affairs and the local foreign affairs offices authorized by the Ministry of Foreign Affairs are responsible for issuance, change and extension of diplomatic and service visas and for issuance of residence permit to holders of diplomatic and service visas.

(3) The Ministry of Public Security and the local public security authorities authorized by the Ministry of Public Security are responsible for inspection on entry and exit of foreigners, issuance of visas at the port of entry, extension and change of ordinary visas, and issuance of residence permit to holders of ordinary visas, who are already in China. 

(4) The Immigration Department of the Government of the Hong Kong Special Administrative Region is responsible for matters relating to foreigners’ entry into and exit from the Hong Kong Special Administrative Region. Its Website address: http://www.immd.gov.hk

(5) Macao Public Security Police Force Immigration Service.Unless visa exempted according to bilateral agreements, a foreigner may apply for a visa to enter Macao upon arrival at the Port of Entry. Website address of the macao public security police force: http://www.fsm.gov.mo/psp/cht/main.html