�ڔQʯ\W(wng)ַQǾW(wng)ɸ߿gߏչԵĵ̼䓽z߰PVC䓽zʹÙCеɡ
Ҏ(gu)̼䓽zֱ(j)OӋҪͬһ2.0-4.0mm֮g䓽zĿȲ38kg/m2僌һ245g/m2�ʯ\W(wng)Ƭ߅ֱһҪھW(wng)ֱpgϲֵLȲС50mm.ԱCgϲ䓽zĽ僌ӺPVC僌ӲƉ
�ڔQʯ\W(wng)ַQǾW(wng)ɸ߿gߏչԵĵ̼䓽z߰PVC䓽zʹÙCеҎ(gu)̼䓽zֱ(j)OӋҪͬһ2.0-4.0mm֮g䓽zĿȲ...
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�ڔQʯ\W(wng)ַQǾW(wng)ɸ߿gߏչԵĵ̼䓽z߰PVC䓽zʹÙCеɡ
Ҏ(gu)̼䓽zֱ(j)OӋҪͬһ2.0-4.0mm֮g䓽zĿȲ38kg/m2僌һ245g/m2�ʯ\W(wng)Ƭ߅ֱһҪھW(wng)ֱpgϲֵLȲС50mm.ԱCgϲ䓽zĽ僌ӺPVC僌ӲƉ