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Products Introduction：
Dewar flask is the storage of liquid gas, low temperature research and the crystal is an ideal device to protect the container and tools。the company's Dewar flask , as good insulation properties, have been widely used in scientific research, health care, oil drilling and other related areas。 as simple structure, good insulation properties, transparency, good seal.

Features：
1.In order to overcome the vulnerability of traditional products in use, easy to damage the shortcomings，use the highest grade of raw materials，after the external fixation in the finished metal protective cover to protect，so this product has been greatly extended service life and greatly enhanced the ability of resistance to external damage.compared with similar products have the advantages of safe, durable.
2.Special sizes can be customized，but the glass is brittle material, strength is poor, friable，therefore not suitable for the manufacture of more than 250mm diameter, 700mm long 。the volume of spherical   should not exceed 10000ml. Reference design for users.

The main technical data are as follows：
Before the vacuum sealing （モ） : 10ˉ6
the baking temperature when vacuum : 400 Degrees
Vacuum time （Hour） : 8
Operating temperature range : -270～200 Degrees