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Obviously your spouse can not get the B2 visa due to his I-485 denial history (that means he has immigration intent. I remember I had suggested you to file I-130 for your spouse to apply for the immigration visa or K-3 visa in Guangzhou about 5 month ago. Why didn't you do that?
See this website for I-130 filing for immigration visa application:
http://www.uscis.gov/i-130
See this website for K-3 visa:
http://www.uscis.gov/family/family-us-citizens/k3-k4-visa/k-3k-4-nonimmigrant-visas
I-130 filing is needed for both immigration visa and K-3 visa. You may hire a lawyer to help you, if necessary.