Verification about invitation letter given to me from Chinese company

If you want to apply for business M type for China, you should first prepare the required documents including passport and the copy, the filled-out application form, 2 passport-style photos, bank statement, hotel reservation, flight itinerary and an invitation letter from the Chinese business partner, and the invitation letter of duly authorized unit, your company's business certificate and letter of introduction of your company. Next, submit the application to the China embassy.