Thanks to both of you. I got confused because of the double "P" in supper. Checking the dictionary "supper" refers to some kind of meal, so I said what?!!"Welded insulation cylinder" is not a common term and obviusly has a specific meanting. Through the use of Google, I found one reference HERE.
You didn't provide anything in the way of context or descriptions, but if the reference I found is correct, you're talking about cylinders used to store liquefied gas such as liquid nitrogen.
Containers for these liquids require insulation so that the contents do not simply boil off. Since a vacuum is an ideal insulator, these containers often are built of welded steel or stainless steel with a void from which nearly all the air has been removed, i.e. a vacuum.
On a smaller scale, such containers might be used to store coffee or tea and can be found in your lunch box.
Although people use the word "vacuum," it impossible to achieve a perfect vacuum, i.e. a state in which there are no molecules floating around.
Different products come closer to achieving this ideal than others. In the case you specify, the manufacturer apparently is claiming that his vacuum is "super" (as cagey said, "outstanding,") although he doesn't quantify it.
I don't believe the term has anything to do with the welding apparatus.