91精品欧美一区二区三区喷胶,午夜福利国产精品电影,熟妇二区,国产又爽又黄又湿免费

ntroduction of thin insulation materials
The raw material of the heat insulating material is ultra-porous silica and polyester fiber, which are manufactured by a wet method. For the first time, it has realized the function of heat insulation in a limited space within 1mm.

specification

The above values are general measured values and are not guaranteed values.

Thermal conductivity comparison

Application and usage scenarios

Insulation effect