Bututu diamita De, DN, d ф Ma'anar De, DN, d, ф Game da wakilci kewayon De - m diamita na PPR, PE bututu da polypropylene bututu DN - maras muhimmanci diamita na polyethylene (PVC) bututu, jefa baƙin ƙarfe bututu, karfe roba composite p...
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