1. 带着结婚证, if you have 婚姻公证, that is better.
2. 带着房产证就够了.
3. 需要出示your 工资 (your paycheck stub)或存款证明 (bank statement) here.
4. your invitation for your wife
5. More photos, especially your wedding pictures
6. If your wife has a job in China, she may ask her work unit to write a employment statement, showing her position is very important and will reserve her current position for her coming.
7. Copies of your passport, visa, DS-2019 form, SSN, etc.
8. She may bring anything if you think they are necessary.
Hope your wife join you soon. Good luck!