Occupational Health Award 2008 & Forum and Award Presentation (Hong Kong, Jan 2009)

The 8th Asian Building Technologies Exhibition 2008 (Hong Kong, Jun 2008)

The 10th China International Environmental Protection Exhibition and Conference 2007 (Beijing, Jun 2007)

7th International Congress On Work Injuries Prevention, Rehabilitation and Compensation (Hong Kong, June 2006)

International Environmental Protection Equipment in China 2004 (Beijing, Jul 2004)

Safety & Health China 2004 (Shanghai, May 2004)

International Environmental Protection and Energy Saving Exhibition 2004 (Shanghai, Mar 2004)

International Environmental Protection Exhibition (Beijing, Dec 2003)