发布时间:2025-01-19 17:07:54
以下为pvc软管配方,供参考:
聚氯乙烯树脂:100;
DBP:10;
环氧增塑剂:5;
硬脂酸钡/镉:1;
DOP:30;
己二酸二辛脂:5;
有机锡:1.5
断桥铝平开上悬窗关不紧关窗时上悬合页处是松的有空隙导致漏风怎么办
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