document.writeln('

                              螺纹直

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BPV    L型二通10

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BPEG  T型变径  8-4

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BPEG  T型变径  10-8

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BPEG  T型变径  6-4

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T正型三通 BPB 14-04

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BX高强度风管Φ5×8 

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                       TPU  防冻管  

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尼龙接头 Φ12

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');