 |  1、Bubble foam 2、Sealing seal 3、Mastic grease barrier 4、Filler 5、Stainless steel belt 6、Outer protective layer |
| 1、Foam glass 2、Seam sealant 3、Mastic grease barrier 4、Inferiority 5、Outer cover layer | |
 1、Bubble foam 2、Seam sealant 3、Mastic grease barrier 4、Filler 5、Stainless steel belt 6、Outer protective layer | |