ʻO ka valve plastik kahi ʻano valve i hoʻohana nui ʻia, loaʻa iā ia nā mea maikaʻi o ka pale ʻana i ka corrosion, ke kaumaha māmā, ka pale ʻana i ka lole, a me nā mea ʻē aʻe.ʻO kēia ka moʻolelo hoʻomohala o nā kiwi plastik.I ka makahiki 1950, w...
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