Nyob rau hauv lub xyoo 1950s, nrog rau kev yug me nyuam polyethylene thiab kev sib cav ntawm cov pob zeb moulding tau mus txog ntau txhiab liv, thiab qee cov khoom lag luam tau saws lub computer {}}
Haum rau cov ntawv thov yas thiab khoom lag luam
Cov plastics haum rau tshuab moulding xws li polyvinylene, xws li cov nruas siv tshuaj,} {{. Cov nruas tshuaj Ntab, thiab cov hwj yas uas muaj cov dej sib cais, cov tais yas, thiab lwm yam}
Zog txuag tau zoo
Zog txuag hauv ntu fais fab
Feem ntau ntawm lawv siv cov zaus hloov pauv kom txuag lub zog los ntawm lub cev muaj zog ntawm lub cev muaj zog, tsuas yog 30's muaj kev siv zog tsis txaus, tsuas yog 30} {} {}}
