?o§?“??????·????¤…???A61-3???è????????B40B???èˉ￥?o§?“??±??o???§é??è?a???é￡??????????PVC???è—¤è′¨???????’????é’￠é“??o????????°”è′¨??·?3?????o?者???????????’??o??￥????o????è??????€??????—?€??’?è°???????è??è?￥é€???€?§??????”?1??μ???????觉???????—??????“??°?o?è—¤è‰o????…·?????€??′?…?é?…????μ“???????–???–?°”??ˉ?€??o§?“????è??è???€?选?–??€?????·￥??°????“????è?3??…è￡…?-‰?????a??ˉè??é???????o??￥????€?è€????????1??‰§è??QB/T2383-1998???????€?????–?é???”¨???è′¨??·??‰é’￠????€?é“?é“?è?±????’?PVC??‘è?????è—¤???é?‘?±????è??é…??′—?€?é…?è‰2?’?é???”μ???é???????¤????-‰?‰1????·￥è‰o????·￥è€???????PVCè—¤?‰??·￥??–???????…·??‰??ˉ?′—?€????é?‰????€?????”?é”??€?????????‰??3?‰??€?é?2?′??¤–?o??????—???è‰ˉ?¤??°”??ˉ?￠?????‰1??1?€?é“??’?è—¤?????“???è??????o????è?′?’??2—??·?????”?€§????????????è?¨??°???????????????é???·￥è‰o?€???￡èμ??€?????”¨?o???€??“????1??3??o”?”¨?o?é…’?o—?€?è￥?é¤???…?€?è??é|??€??￡??‰?é|??€?????±…?-‰??‘é—2??o?‰€????o§?“?è??销è?3????′2?€??????—?–ˉ?€?è￥???-?‰??-‰????????¨?????…?¤–?????o????·±??—??￠è?????è?￠è′-èˉ·?3¨???????‰????????o§?“??????·?€?