与金属管相比,凯佳产品不需进一步隔音来降低相对高速水流所产生的噪音分贝数。
Compared with metal pipe clean health products need further sound insulation is it reduce high-speed noise decibel that rivers produce count relatively to come.
与金属管相比,凯佳产品不需进一步隔音来降低相对高速水流所产生的噪音分贝数。
Compared with metal pipe clean health products need further sound insulation is it reduce high-speed noise decibel that rivers produce count relatively to come.
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