URGENT BUSINESS VISA

I AM A SYRIAN CITIEZEN, IN NEED TO VISIT CHINA FOR BUSINESS TRIP
WHAT DOCUMENTS I SHOULD SUBMIT?
IS INVITATION REQUIRED? AND IS IT NEED AS OFFICIAL INVITATION FROM THE MINISTRY OF FOREIGN AFFAIRS IN CHINA OR SUPPLIER INVITATION IS ENOUGH

LOOKING FORWARD TO YOUR REPLY ASAP
RGDS
HAMZA TAFTANAZI