ISO 8770-2003《建筑物内污物和废弃物排放》
(求助)ISO 8770-2003《建筑物内污物和废弃特排放(耐低温和高温)用高密度聚乙烯管和配件》ISO 8770-03 Plastics piping systems for soil and waste discharge (low and high temperature) inside buildings - Polyethylene (PE)
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