The Chinese from either the mainland or Taiwan are the ones setting up the meth factories here.
I watched this documentary about meth on PBS once. The most shocking thing I got out
of it is that pseudo-ephedrine (the active ingredient in meth) is only manufactured by
a few factories in the world. Shut the factories down, no more meth. A very easy solution, but
the drug companies that make millions of dollars off that stuff in their medications
have blocked every effort to shut those factories down