I need to visit China for business purpose.What documents should I submit to acquire visa

You will make trade/commercial activities or not?
If so, you need to apply a M type. For it, you need to prepare an Invitation Letter of Duly Authorized Unit, invitation letter from your company, your local company's covering letter, company's bank statement (less than 3 pages of it), copy of registration certificate, your valid passport, application form with a recent taken photo.