what paperwork is mandatory for I-485?

Could you please tell me what paperwork is necessary for 485 besides passport,visa,I-94 card, working permit, marriage certificate, birth certificate, and physical examination. Someone said that I need to submit the copies of all the tax return forms and 3-month payroll checks, are these mandatory?

If I don\'t have no criminal record certificate, do I have to get one from China and submit later? What\'s the difference between FBI\'s name check and no criminal record certificate? Is that mean if I have the no criminal record certificate, I can waive the FBI\'s name check?