Low temperature welding insulation cylinders introduction Low temperature welding insulation cylinder is the high vacuum multi-layer insulation mobile low temperature liquid container which is used in storage and transportation of liquid air product (liquid oxygen, liquid argon, liquid nitrogen, liquid carbon dioxide and nitrous oxide, and liquefied natural gas, etc.) Our dewar flask adopts the advanced process and technology and the production course is controlled strictly by the quality assurance system which can guarantee the quality effectively. It is safe and reliable, easy to use, loaded with a high rate and can be reassembled. Our welding insulation cylinder has gained the technology award and the important national patent award since it was developed.