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15142020677 13555898135 王經理60秒人工響應
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Square check valve (check valve chamber automatically opens and closes the valve disc based on the flow of the medium itself, to prevent medium backflow, also known as check valve, one-way valve, backflow valve, backpressure valve)
Positive pressure air supply outlet
2023-05-10Remote control multi blade smoke exhaust port
2023-05-10Circular fire damper
2023-05-10手動調節閥
2023-05-10Fully automatic fire damper
2023-05-10Smoke exhaust and fire damper
2023-05-10Air volume control valve
2023-05-10Fire damper
2023-05-10Multi leaf smoke exhaust outlet
2023-05-10electric control valve
2023-05-10
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