To me, the biggest problem with an unknown or relatively unknown (besides the obvious scam risk) is lack of 3P testing. Group buys do 3P testing, as do testing groups, of course. So none of those are probably testing these people.
And jokingly but seriously, after COVID, I would be reluctant to use anything with Wuhan in the name. But now I realize what WWB stands for (Wuhan Wansheng Biotechnology). Geez.
I was intrigued by another Chinese vendor, HXTNT, since the Rat Cartel GB group has used them a little. But I don't trust Chinese customer service, so I really need to personally know people who can vouch for a vendor. Like some other GB groups, Rat Cartel has done far more 3P testing with LN Peptides than anyone else.