Heat insulation materials, according to the material can be divided into inorganic insulation materials, organic insulation materials and composite insulation materials of three categories; according to the form can be divided into fibrous microporous, bubbly, paste (slurry), granular, composite, plate, block, etc. In fact, some of the products have the same application, but the name is different, and some of the products have the same name and different applications. Such as paste, paste paint between the difference between the board and the difference between the block, some products should be a synthetic main raw material name, but the individual products and at the same time with two main raw materials.

In the folding is also easy to distinguish, PA66 nylon insulation strip folded once or twice will break, while the PVC strip is particularly soft, can not be easily broken, often need to be folded more than ten times before.　　

Now on the market there are a number of manufacturers in the sale of nylon 66 insulation strips. The test found that: some completely cheap mineral (such as calcium carbonate, talc, etc.) to fill, some use most of the minerals and a small amount of fiberglass (less than 10wt%) mixed filler approach to enhancement; there are even nylon 66 should be added to the inside of some of the non-engineering plastics such as polypropylene, polyvinyl acetate, and so on!