Complex sentence: In 2006, the company changed its name from R.S. Promotion to RS Public Company Limited and underwent rebranding in 2007 to identify itself as a broader media company rather than just a record label.
Split into simpler sentences: In 2006, the company changed its name from R.S. Promotion to RS Public Company Limited. It underwent rebranding in 2007 to identify itself as a broader media company rather than just a record label.