Umuyoboro wa plastiki nubwoko bukoreshwa cyane bwa valve, bufite ibyiza byo kurwanya ruswa, uburemere bworoshye, kwambara nabi, nibindi bikoreshwa cyane mubumashini, peteroli, kurengera ibidukikije nizindi nganda.Ibikurikira namateka yiterambere rya valve ya plastike.Muri 1950, w ...
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