Have a few friends there, they tell me roster is dependant on the owner, pilots as a rule are tied to 1 a/c and one owner, so depends how much they wan't to go flying and to where.
It's definitely not 1 week on 1 off, and the hrs per year seem to be anything between 200-500.
I believe T&Cs are dependant on the owner also, ball park figures seem to be 85,000HKD/month for f/o and 130,000HKD for skipper, as far as I know that is all inclusive with little or no benefits ( eg. schooling, medical, gratuity, CNY bonus etc etc ), not that they are bad T&Cs by any stretch !