Report - 內徑選擇鋼管／厚度選擇不銹鋼管 電縫不銹鋼薄管／抽拉 ... - … · 2019-02-25 · PIPG C2700（黃銅） PIPA A 603 型式 L 指定單位1mm t NT$單價 1∼4

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