Perhimpunan Pelajar Indonesia di Aachen (Indonesian Students Association in Aachen) — or PPI Aachen is a non-party political, scientific, social and independent student association based in Aachen. PPI Aachen has a mission to gather, protect, and defend the interests of its members in order to improve their quality and optimize all their potential, and to create a more fair and prosperous Indonesian society. To be beneficial to both Indonesia and Germany is our main vision.