|Operator||China Satellite Communications|
|Mission duration||15 years|
|Manufacturer||Thales Alenia Space|
|Launch mass||5,054 kilograms (11,142 lb)|
|Power||2 deployable solar arrays, batteries|
|Start of mission|
|Launch date||27 November 2012|
|Rocket||Long March 3B/E|
|Launch site||Xichang LA-2|
China sea area
the Indian Ocean region.
ChinaSat 12 (Chinese: 中星12号; pinyin: Zhōngxīng 12) communications satellite is wholly owned by China Satellite Communications, with part of its communications payload leased or rented by SupremeSAT, a Sri Lankan company to be marketed to potential users as SupremeSAT-I. Once operational, it will provide communications services for the China, Sri Lanka, East Asia, South Asia, Middle East, Africa, Australia and China sea area, the Indian Ocean region.
ChinaSat 12 was also known as Apstar 7B (as a backup of Apstar 7), but acquired by China Satellite Communications from its subsidiary APT Satellite Holdings in 2010. However, APT Satellite Holdings was contracted by its parent company as the operator of ChinaSat 12.
Following launch on 27 November 2012, the satellite was placed into geosynchronous orbit and located at 51.5° East while being tested. 
The satellite was built by Thales Alenia Space and has a designed life of 15 years.
Diagram of the Long March 3B, showing its outboard liquid rocket boosters.
The launch of a Long March 3B (similar to CZ-3B/E (Chang Zheng-3B/E))