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中介推荐一个，要价620，但是还有几个选择什么的煤气管道的pressure tester, 175一个，可以不选吗？ Install RCD/s to Lighting/Power Circuit/s: $115.50 incl. GST 1st RCD Install ($60.50 each Additional RCD install) Replace Appliance Gas Regulator to Test Pressure: $175 incl. GST per Appliance Install Main Gas Line Pressure Test Point: $175 incl. GST 这个价格怎样，有没有好的推荐，最终给一张证明书是吗 |
