宏源不锈钢风管共板隔音隔热防火阻燃矩形消防排烟排气管

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Macro, stainless steel, wind pipes, sound insulation, fire resistance, rectangular fire, smoke exhau

Anhui hong ventilation equipment ltd

Address:Zone 102, international building materials market i, fatung county, hoi-fu province
Tel:18225839476

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18225839476

宏源 不锈钢 风管共板 隔音隔热防火阻燃 矩形消防排烟排气管