neo sans

ID a quasi-neo sans/neo tech sans serif for expo xi'an 2011

Hi, guys.

Anyone has an idea what typeface it is in the logo. My first thought is it's slim and flat version of neo sans/tech, but not sure. Or is it a custom font? Thanks in advance. BTW, I didn't try whatthefont.

PS: it's the logo for the International Horticulture Exposition 2011 Xi'an (where I am in), but it's not a good news for us.That's another story.