The country has strict production requirements for anti-theft doors, classifying them into four levels based on the time of resistance to destruction: Class A (not less than 30 minutes), Class B (not less than 15 minutes), Class C (not less than 10 minutes), and Class D (not less than 6 minutes).
Security doors are available in two materials: steel and stainless steel. The steel thickness of the door frame must be at least 1.5mm, the door leaf steel thickness at least 0.8mm, and the door weight is generally over 40kg.
