Most CPA networks allow Asians to join but you need to send US traffic to the offers in order to make money. Of course, there are some offers like eHarmony dating site and a few other trial offers that are open to worldwide traffic as well. Also, I do not recommend promoting offers from an Asian CPA network (if there is any) unless you are able to control a huge amount of Asian traffic(about 500 daily) because as an Asian, I know the conversion will be low and skepticism will be high. Also, due to the variety of countries that fall under the scope of "Asia", most Asian networks only focuses on certain countries only (China, South East Asia), which will greatly reduce your earning abilities.
What type of offers are you promoting? We will allow anyone to promote just as long as they are not fraud. That is one of the main concern when bringing on a publisher from another country. PM me and we can chat
All affiliate networks will glad to work with you .. just make sure send traffic as they required .. however most affiliate networks have few international offers too if you have asian traffic
I recommend joining a few CPA networks (3-5) just to compare the offers on the networks. I am personally on Market Leverage, NeverBlueAds and Hydra. So far so good with them. If you want to ask me some detailed questions, you can always send me a PM or contact me at my blog and I will be happy to help you out.