Beijing - Chinese Olympic officials have promised the 2008 Games will be "clean" with a radical new procedure being used to prevent doping, Wu Moutian, deputy director of the Chinese Anti-doping Agency, said on Thursday.

The largest Olympic doping testing station ever will be set up in the Olympic Village with the central laboratory able to test for 200 internationally forbidden substances.

"Every one positive will be announced," said Wu.

Each case detected will be penalised, promised Chen Zhiyu, doping official for the Beijing Organising Committee.

The Olympic doping testing period began July 27 and will run until the Games end on August 24. A total of 4, 500 doping controls, including 900 blood tests, are planned in Beijing, about a 25 per cent rise on Athens. (dpa)