Complex sentence: In 2003, he founded Post Production Office Limited, the largest post-production company in Hong Kong, providing services for movies, videos games and advertisements, the company grosses over one billion Hong Kong dollars annually.
Split into simpler sentences: In 2003, he founded Post Production Office Limited, the largest post-production company in Hong Kong, which provides services for movies, videos games, and advertisements. The company grosses over one billion Hong Kong dollars annually.