VO2 strikes again VO2 has successfully obtained the co-organising right to host the TOPKING WORLD SERIES 2018 – Samui, Thailand match! A Hong Kong fitness brand hosting a Muay Thai fight in Samui is the first ever! Through the world-known TOPKING fights, we hope to bring Hong Kong Fighters to a new level! Support Muay Thai sports! Support Hong Kong Muay Thai Champion Wu Ka Ho! See you on 26th Sept at Samui!