That benzene and n-hexane (!) were being used there til recently, speaks volumes to anyone Chem-ept. Their hideousness has been known for n decades.
Methinks we're well past the stage at which sane prophylactic measures precede the use of some insanely-great new molecular-tweak (beloved of Mfg./despised by pathologists.)
Bizness has bulldozed its expedience, winning over any careful assessments of the toxicity of the New solvents -vs- humans [and Other animals.]

As to that [Other} ... have no real data on what oversights exist re the disposal of these substances; our record, from radionuclides onward though, is as expected: sketchy, last I tried to look.
I merely suppose that many species are being endangered--even after the effects of ill-tested biz-solvents on humans.
Some of the resultant mutations may well do more than just Surprise. You can't train-up n toxicologists to match $T-levels of Corporate production, now and next--you just Can't.

Shiny clean factories: for the Product; as. if. those masks worn had more effect than--keeping the product spiffy.

They've learned well from their dis-USA acolytes: kill their med insurance. See last two ¶s. Chinese lawyers: get busy.
Shit, ya can't copy/paste from increasing #sites now. Bastards.