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詳細(xì)介紹
地彈簧，進(jìn)口地彈簧，DORMA多瑪
DORMA 多瑪BTS80F產(chǎn)品說明
Floor springs designed especially for fire and smoke doors.
Wide range of functions,quality assured.
CERTIFIRE approved for use on certain fire doors:See
certificate 28（BTS 80 F and EMB）.Complies with
requirements of HTM59（DOH）.PSA approved（MOB H3 030.
適用于防火門和防煙門
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