Oops double posted.
For soy, they use normal soy,
http://en.wikipedia.org/wiki/Soy_sauce. You can buy the red soup package at yaohan, price was 4 bucks or so. Chile oil and soy sauce can be found there too. Lastly, I recommend...Bull Head bbq sauce.
http://forums.egullet.org/uploads/11..._2101_1128.jpg