... extinguishingflame-retardant, non-toxic, coloring, etc. PC plastic shadow could be seen in every corner of ... extinguishing capability .8.No toxic, it is good for weak acid .9. Translucent: the PC board ... Due to the high chemical stability, can be used for the production of anti-corrosion pipes, pipe fittings, ... blowers. (3)PC hard board is widely used in the chemical industry for the production of a ...