Yin gyare-gyaren busa, wanda kuma aka sani da gyare-gyaren busa, aikin filastik ne mai tasowa cikin sauri.Tsarin gyare-gyare a lokacin Yaƙin Duniya na Biyu, an fara amfani da ƙafafu da aka ƙera don samar da kwalabe na polyethylene mara nauyi.A ƙarshen 1950s, tare da haifuwar poly-density poly ...
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