What are the requirements to apply for visa to attend a conference in China in October 15-19, 2012?

I am Egyptian citizen and have Egyptian passport. I am now residing in Saudi Arabia (Dammam) and working in a governmentatl hospital (King Fahd Specialist Hospital-Dammam). I am planning to attend medical conferene (international continence society meeting) that will be held in Beijing from October 15-19, 2012. what are the requirements to apply for visa to attend this conference and where to apply?

best regards,
Mohamed A Gomha. M.D.
professor of urology
urology consultant
King Fahd Specialist Hospital-Dammam
urology deparment
P.O.Box 15215
Dammam 31444
email hotmail.com|gomha99
mobile phone 0502322014