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免電力通風器轉動原理 ※藉由室內熱氣上升,熱氣自24片葉片縫隙排出,驅動主機球體運轉。 ...
2013-05-10
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Strengthened roof window which is lifted and five grooves’ window

Strengthened roof window which is lifted and five grooves’ window

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B04
Skylights, roof access hatchways, roof skylight, sliding hatchways, Metal Access Hatchway, stainless steel
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