Nkhani Zamakampani
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Kufotokozera Kwathunthu kwa Zipangizo za TPU
Mu 1958, Goodrich Chemical Company (yomwe tsopano yasinthidwa dzina kukhala Lubrizol) idalembetsa koyamba mtundu wa TPU Estane. Kwa zaka 40 zapitazi, pakhala mayina opitilira 20 padziko lonse lapansi, ndipo mtundu uliwonse uli ndi zinthu zingapo. Pakadali pano, opanga zinthu zopangira TPU makamaka amaphatikizapo...Werengani zambiri