online several places list his album "power of the powerless" - try amazon, cduniverse, tower records, etc. other than that i am aware of no other international sites that sell his music. a chinese etailer dangdang.com sells a couple of his albums (a couple of greatest hits albums and "rock on the new long march") and claims to do international shipping. they have some complex fee schedule for international shipping (i have never ordered anything from them). also the site is only in chinese. i have heard of people finding his album "balls under the red flag/hongqi xia de dan" in hong kong, singapore, and malaysia at HMV and tower records. the latest news i have seen says that his new album
the village attacks the city will be released at the end of the year.
as to nirvana (grunge-like), i would recommend a band called cold blooded animal/lengxue dongwu. it had been available on yesasia.com in the past (i think), but is not currently. you could press them to try to find it for you. their album was released in china on
scream records. they offer a mail service, but you pay in cash. i have never tried that before. scream records releases are also available on dangdang.
i am not a big fan of hei bao though i do own a few of their albums (mainly because i just want to collect as much chinese rock as i can). its 80s hard rock ballad kind of stuff. i liked their first album when i heard it around 1993 or so (that is with dou wei as lead singer).
i do like dou wei's music though. at first i didn't find his changing music styles to my liking after his first solo album, but as he has changed so have i. i like all of his music now. he's all over the place over his career with respect to style: rock, electronica, post-punk, jazzy/lounge stuff, etc.
overload has released 3 albums. the first is a classic of chinese rock - hard rock - released by taiwan's rock records mainland unit magic stone. i haven't heard the most recent (3rd) album. the second album is most likely similar to the 3rd and is available from yesasia.com as "magic sky" (this is the album which has the song that yang naiwen also did).