Three Germans have been arrested on suspicion of spying for the Chinese secret service, German prosecutors said. Two men and a woman were arrested in the western German cities of Dusseldorf and Bad Homburg on Monday, the Federal Public Prosecutor General said. At the time of their arrest, the suspects were in negotiations about research projects that could be useful for the expansion of China’s maritime combat power in particular, according to the prosecutors. “As the Federal Office for the Protection of the Constitution, we tracked down these people very early on and continued to monitor thei…