beware of dangerous presence of pfas in protective paints from the wood industry

pfas pfass concept concepts pollutants pollution polyfluoroalkyl pfoa pfos pfna pfhxs paint varnishing painting activity varnish material lumber wood plank timber industry wooden hardwood carpentry perfluorooctanesulfonic perfluorooctanoic contamination organofluorine chemicals environmental damage carcinogen water repellent chemical danger warning synthetic cancer toxic waterproof impermeable waterresistant rainproof fluorine environment dangerous fluorochemicals carcinogenic chemistry