Ko te paura o Boron nitride he rauemi whai kiko kua kitea whanuitia puta noa i nga momo ahumahi na ona taonga motuhake. E mohiotia ana mo te kaha o te wera wera, te hiko...
I roto i nga tau, i roto i te kaupapa o "Kounga Kounga, Hangarau Arataki", kua whakawhanakehia e te kamupene te phosgene wai parakore-nui me te hanga tetraisocyanate rongoa rongoa (7900 #), kounga teitei ...