We have been working directly with Japanese studios and their Taiwanese distributors since 2005 and on line since 2007.
Shooting on the mainland? Tell me where to have the Red Cross send your gift box.
That said, if you can read Chinese and have a bank account in Taiwan or HK these guys will work with you
A webcam site based in Taipei.
http://www.youngmeimei.com/
They also run
http://www.zencash.net/ and supply much of the Uncensored Japanese porn you see floating around. I am not sure how stable that program is.
Japanese studios are starting to set up offices in US to cut out the middle men. Japanese laws prohibit their sale directly of uncensored.
"JAP" is a racist word same as the N word. Quick way to kill your Japanese traffic is to the use term in any way.