Will I have enough time to transfer ?

I am flyng with Air China from London Heathrow to Bangkok via a two hour stopover at Beijing Internatonal. I arrive at Beijing at 11:55am, I then have to check-in at 12:25 for my outbound flight to Bangkok, only 30 minutes after I arrive at Beijing. Will Ihave enough time to find the check-in desks for international (outbound) flights, and make it to the outgoing gate ? Thank you.