Besides, the device has the advantages of that: 1. Various materials can be adopted as agent of liquid nitrogen series fire extinguisher, this lead to a low manufacture cost;
此外，它还具有以下优点：1。液氮灭火系列所需原料丰富，制做成本低廉；
The utility model provides a fixed fire extinguisher. An extinguishing agent tank is a vacuum heat insulative low temperature liquid tank which is internally filled with extinguishing agent;
一种固定式灭火装置，灭火剂储罐为真空绝热低温液体储罐，内部充装灭火剂；
The utility model provides a fixed fire extinguisher. An extinguishing agent tank is a vacuum heat insulative low temperature liquid tank which is internally filled with extinguishing agent;
一种固定式灭火装置，灭火剂储罐为真空绝热低温液体储罐，内部充装灭火剂；
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