What are the details for Chengdu Airport inter. to inter transfer?

I have a transfer in CD coming from Thailand and going to USA. I only have a 70 minutes to make the connection. Do I have to go through immigration, customs, baggage claim, check-in, and security all in that time? Or will they automatically transfer my baggage for me? If not, would it be better to just take carry-on? My flights are both with China Eastern.