PAYWARE :
ELAP (Oder Hagen Siegen) : https://store.steampowered.com/app/208300/Train_Simulator_European_Loco__Asset_Pack/?l=german
BR 650 : https://www.christrains.com/ts_product_stadlerRS1.html
3DZUG Kühlwagen : https://www.3dzug.de/Train-Simulator-2016/Gueterwagen-5/Tnfrhs-Kuehlwagen.html

FREEWARE:
BR 650 KB AG Repaint Pack : https://rail-sim.de/forum/wsif/index.php/Entry/3765-K%C3%B6blitzer-Bergbahn-AG/