Definition of 保温材 (ほおんざい)
ほおんざい
                        保温材
ほおんざい
hoonzai
noun
•
        
heat insulating material, lagging material
Related Kanji
| 保 | protect, guarantee, keep, preserve, sustain, support | 
| 温 | warm | 
| 材 | lumber, log, timber, wood, materials, ingredients, talent |