Insulation 1.Insulation supplied by Zhenhan refrigeration and warm company covers various sizes, with inner diameter from 3 mm Insulation Insulation supplied by Zhenhan refrigeration and warm company covers various sizes, with inner diameter from 3 mm (1/8”) to 140 mm (4-1/2”). The insulation is made of Temguard material, which is by butadiene-acrylonitrile rubber and NBR/PVC. The material used to make insulation does not include any CFC, thus the insulation is safer to the environment and better to life.

Insulation