I wish to apply for a Chinese Working Visa

You can get your visa on the same day with the 1 working day process service. But you'd better go to the embassy early that day and you need to pay additional ISK 3,000 for the service.
Here is a list of work visa requirements for your reference:
http://is.china-embassy.org/eng/lsyw/zgqz/t837725.htm
You need assistance from your employer to get some of the docuements.

Payment for same day working Visa. You mention I can receive a same day Working Vise which is a Type Z for ISK 3,000.. I've never heard of ISK.. can you clarify.

David is wrong, if you apply for China visa in Ireland, you need to pay extra euro 33 for 1 working day processing service.