Am I eligible to apply for a Chinese business visa here in Seoul?

Hello. I am a German citizen, a U.S. Permanent Resident and currently assigned by my company to the Republic of Korea for two years. I do possess an Korean Alien Registration Card, and I do have a dual-entry business visa for China issued in New York, valid until February 2012, with one entry left.
- Would you be able to confirm that I am eligible to apply for a Chinese business visa here in Seoul, rather than in a consulate in Germany or the U.S.?
- Depending on my business schedule, I will need to apply for a new business visa soon. As far as the visa fees are concerned, will my application be treated as one by a U.S. Citizen, or a German Citizen?

Thank you very much,

Jens Haetty