China's automotive components sector is set to achieve annual growth of 20 per cent for the next five years driven by demand for new cars and a growing secondary market. The aftermarket segment will become the main outlet for automotive parts as the average age of vehicles on the road continues to rise and the current total car population has already surpassed 100 million. The counterfeit auto parts market, already the world's largest with a current value of about US$40bn, will only increase as the overall market grows.