The country has strict production requirements for anti-theft doors, classifying them into four levels based on anti-destruction time: Grade A, B, C, and D. Grade A is no less than 30 minutes, Grade B is no less than 15 minutes, Grade C is no less than 10 minutes, and Grade D is no 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 thickness at least 0.8mm, and the door weight typically exceeds 40kg.
