Yo, robot. Someone has already tried to reply your question about TUV. But I will provide a slightly more detail one.
TUV (the U has 2 dots on top of it in it's actual font) is a regulatory testing and certifying body (from Germany i think). They are like our PSB (in fact they bought over some of PSB testing facilities) in Singapore. Still remember when you used to find socket plugs with "PSB Certified" stickers on them. It is pronounced as "tooth" and not T - U - V.
