Aixiz module - plastic type?

I know I saw this posted on the site before, but a search for "aixiz" obviously turns up thousands of hits, and the mfgcn.com website doesn't seem to offer this info anywhere I can find anyway, but ...

Does anyone know for sure what the plastic type is that the focus module innards are made of? ABS, Polycarbonate, PVC...???

Thanks!

Dave