费雷尔 FDBD通风多叶蝶阀烟风道专用电动矩形百叶阀气流调节

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Zhejiang ferrer control valves ltd

Address:430 north of zhangburg
Tel:13250891880

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13250891880

费雷尔 FDBD通风多叶蝶阀 烟风道专用电动矩形百叶阀气流调节