Typically it depends on several factors.  Mostly what languages are being translated and the subject matter.  Technical/Medical/Scientific etc... get charged more because you really need someone who understands that industry.

Normally I was charged 200RMB per page for non-industry specific translations.  For highly technical documents it would go up to 450 per page.

chinese to english? how good is your chinese? do u have the HSK 6 - 8 level ? do u have a cert to prove it? i know of a company in beijing looking for a chinese to english translator.

obioma..can you send me detail on my e mail ID abhikis@live.com

I usually charge between EUR 0.1 to 0.15/Chinese character. That's a usual rate among translator from German/English/French to Chinese.

Naturally, you have companies who will pay a Chinese non-native speaker to make the translation for let's say EUR 0.03/Chinese character and have a professional native speaker to do proof-reading of the text for EUR 0.04/Chinese character.

Chinese companies will often give you a "shitty rate" and ask you to sign some binding agreement with them.

If it's a Chinese company who contacts you, I would suggest you the following :

1) if they require a translation test, you can accept between half to one page, if more don't accept it.

2) in terms of rate : try between EUR 0.1 to 0.2

3) avoid any proof-reading from Chinese into your mother tongue, as explained you may end up wasting more time in correcting than in translating the whole document

4) in terms of payment, make sure that they can pay to the account you requested without any further information (VAT number, registration to the registry of commerce)

I am working as a professional translator, so if you have question, don't hesitate to ask me.

At the beginning, I have been fucked up by some Chinese companies before setting some clear processes for myself.