Ngā Pūrongo Ahumahi
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He Whakamārama Whānui mō ngā Rauemi TPU
I te tau 1958, i rēhitatia e Goodrich Chemical Company (ināianei ko Lubrizol) te waitohu TPU Estane mō te wā tuatahi. I roto i ngā tau 40 kua pahure ake nei, neke atu i te 20 ngā waitohu kua puta i te ao, ā, he maha ngā raupapa hua o ia waitohu. I tēnei wā, ko ngā kaihanga rauemi mata TPU te nuinga o te wā...Pānuihia atu