Literally the 2nd item on your list is C651 made by Siemens which has design and headquarters in Munich, Germany.
Also a quick Kagi search could have pointed you at "Siemens Mobility awarded contract to deliver CBTC on Singapore’s 8th & longest fully-underground MRT Cross Island Line" ;)
Okay I give you that. I was wrong about zero. 19 trainsets out of a total of 594. 3%. And those were manufactured in Austria (like I said), not Germany. But yes Siemens is HQed in Munich. So I guess they bought them from there. True.
Not sure how one can interpret "Singapore because they buy their excellent MRT trains from Germany" and then those excellent trains are a mere 3% of Singapore's trains (with the vast majority being Chinese and Japanese. Even the French trains are more than 3x as many). But hey, whatever.
Also a quick Kagi search could have pointed you at "Siemens Mobility awarded contract to deliver CBTC on Singapore’s 8th & longest fully-underground MRT Cross Island Line" ;)