China is one of Apple's largest markets with annual sales growth of 83% in the country in its fiscal fourth quarter. As part of the agreement, Apple promised to use more components from Chinese suppliers in its devices, sign deals with Chinese software firms, collaborate on technology with Chinese universities and directly invest in Chinese tech companies, the Information report said. The five-year agreement was made when Cook made visits to China in 2016 to quash a host of regulatory action against the company.