How can you remove logos from a bike frame? I'm trying to remove all these annoying labels from my bike. On the main frame there is one big logo, but I'm not sure if it's a sticker or not. The frame is black, but it's very cheaply made, and the logo is a bit higher, but between the letters it gets lower again. Is there some laser techique to get logos like this onto a frame? Or are that also just some weird kind of stickers? Anyhow, how shall I go about removing the logo without damaging the underlying varnish?

It's almost certainly stickered if it's a cheap bike, plus laser etching is usually reserved for bare metal frames - Titanium in particular. Cheap or not, it's still probably got a clear coat over it, and that sticker is almost certainly underneath the clear coat. Unless you're prepared to strip it down to raw metal, prime it, and paint it, you're probably better of just leaving it as it is - especially if it's a cheapie.