Dear Mr Ibrahim
You can apply for chinese visa at chinese embassy, prove the reason of your visit and current invitation letter from your host or your business partner indicating they invite you for business.
Good luck.

Thank you for your reply,is INVITATION only you need from me or including all the document i produces before.....just guide me with the document you need from some has gone to china before...

You need to provide fresh document, such you provide for your formal visa...also, your invitation letter should be current letter.
Wishing you best of luck.

hello,the ID CARD chinese embassy request is that the national I D CARD OR INTERNATIONAL OF NIGERIA OR ANY OR OTHER I D CARD.for the round trip air ticket between china and nigeria embassy request is that reservation ticket or used old one.if new ticket will issue what happened if the person does not get the VISA.AT END OF THE DAY.While for the bank recent statement of account can i use my dollar account statement that i did transaction between i and chinese company for a geinune reason.

Your international passport is require,..ticket reservation, does not means you buy the ticket..
Please make a new document for back up, old ticket reservation will not be accepted. also, you can use your $ account as bank back up as well.