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Terms for subject Refrigeration containing 防烟 | all forms | in specified order only
ChineseEnglish
排烟防火阀smoke fire damper
消防安全和烟气控制fire safety and smoke control
消防用排烟通风机smoke exhaust fan for fire fighting system
防烟火风阀fire-and-smoke damper
防烟阀smoke proof damper

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