Do I need a Chinese VISA if I have a valid Polish passport?

I am traveling to Hong Kong with my Dragon Boating team on June 27th, arriving June 29th, and departing July 10th back to Pearson Airport in Toronto. I currently have a Polish passport that is due to expire in 2013 and has more than 6 months validity left on it. I was reading the "Mutual Visa-free Agreement between China and Foreign Countries" page and noticed Poland was on it although I don't fully understand what the "Diplomatic, service passports, seafarer’s identity certificate/
seaman’s identity certificate/ seaman’s book" are. I would just like to know what would I need to travel to Hong Kong this summer. Thank you for reading my concerns,