Nqus metalized tungsten filament yog ib yam ntawm cov khoom siv nqus tsev vacuum, uas yog siv dav hauv kev lag luam txau ntawm cov duab, iav, xov tooj ntawm tes, ntau yam plastics, organic tshuaj, hlau substrates, thiab ntau yam khoom dai.Yog li cas ib ...
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