i use that brand almost exclusively and have absolutely no complaints (other than the prop/susp hurts like a mofo but is probably my favorite AAS i've tried)
a lot of the guys here will dog him, but i'm going into my 4th cycle using his stuff and haven't had a problem growing yet.
yes, tests have been done. Some of his stuff came up as pure crap (anavar for example) or underdosed, others were ok. It's up to you, you're the only one who can really value your health...
I used his 50 mg winny and had good results for oral winny (i think injectable is far superior though) and I use his 200 mcg clen which works well. I seem to have a high tolerance to clen though bc I take 1 pill or 200 mcg a day and dont even get shakes (got shakes for first 3 days that was it)and this is the 3rd brand of clen Ive tried. I had his anavar but heard to many bad things about it so I just got rid of it but my buddy took it and blew up so I doubt it was legit var maybe dbol or adrol but definitely not var. I have no experience with his injectibles but Ive heard they are painful
Despite what many zealots will say here, i think chinaman makes some good stuff - his tabs are always excellent (at least his dbol/winny/clen/ancilliaries) and his injects are very slightly underdosed but the price more than makes up for it.