LONDON/FRANKFURT, April 14 (Reuters) - Ukrainian forces are finding a growing number of components from China in Russian weapons used in Ukraine, a senior adviser in President Volodymyr Zelenskiy's office told Reuters, as Western supplies are squeezed by sanctions. Asked whether Chinese companies had provided parts for Russian military hardware, China's foreign ministry spokesperson's office told Reuters: "Throughout history, China has launched normal trade cooperation with all countries, including Russia, on the basis of equality and mutual benefit. See here for a complete list of exchanges and delays