Get married with a Gangladesh, how can I bring him to China?

I'm a Chinese citizen that's goin to marry a local Bangladesh guy! we r goin to get married in Bangladesh ! I'm goin there at the end if September ! my question is: before goin back to PRC,we need to go to the embassy to have the marriage certificate verified and then I can use it in china! how long is it gonna take to get it verified and how long is gonna take my husband to get a visa for china?

wish u all the best !