Is it ok to buy a iPhone 5s from Guangzhou? Please guide me?

I'm going to go China and I want a 5s. Dose anyone know that is it ok to buy it from there?

In China they manufacture Apple products so there are lots of chances of getting fake iPhones which you can get very cheap. But i'd advice you buy Apple from a good retail store or Apple authorised store or Mac store.

I can reconize the fake one

Since you can tell the difference, as long as it is a reputable dealer and unlocked of course. Best luck.