It can be effectively separate the noise and vibration as its have some space at the end of the tube, the pipeline is not affected when thermal expansion or contraction.

因管末端有间隙可有效地隔断噪音及振动地传播，热胀冷缩时管路亦不受影响；

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He warned that the country could not escape the global slowdown, saying that the economy was likely to shrink for a few more quarters this year--marking the country's first economic contraction in nearly two decades--but a rebound may occur by year's end.

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