In China earlier this year, the local city FDA authorities in Lacey City raided something they called a "Black Den" or "Denture Den" (alluding to opium dens) and a member of the local press, called by a neighbor, was onhand to snap some photos.

The neighbors reported no activity in the lab during the week, so it appears to be a moonlighting lab, possibly for technicians who work a full-time job elsewhere.

Full story here: http://www.kq133.com/A/103904 (in Mandarin)