... : 2mm +/-0.1mm 3. Infilling with rock woll, fireproof\heat preservation etc. 4. Manual painting, color fasten more than 10 years ... no.: GJJA8 product name: anti-theft steel door,machine heat transfer steel door,security door place of origin: China loading ... -plating large hinges (4)door leaf fill with rock woll,heat preservation,sound insulating, fireproof, moisture-resistant effect, thiefproof (5)non- ...