Chang Diving Center is your 5* PADI | TDI | SDI Instructor Trainer Center since 2005. We are Located at Koh Chang island. In the Province of Trat. Which is about 315 km from Bangkok at the eastern gate to Cambodia. At our Dive Center we offer PADI | SDI and TDI Courses from Beginner to Professional in the warm Tropical Water of the Golf of Thailand.