The door made of cold-rolled steel plates can be regarded as the "hardcore" in the field of safety. Its base material strength can reach the standard of Q235 steel. Within a thickness range of 1.2-2mm， it can withstand an impact force of over 1500N - this is equivalent to the destructive strength of three or four adults exerting force simultaneously. The surface treatment process has been upgraded from the early spray painting to heat transfer wood grain or fluorocarbon spraying. The fluorocarbon paint door model of a certain brand even passed a 500-hour salt spray test， and it remained shiny and intact after being used in coastal areas for ten years. The unique multi-lock point linkage system of the steel door (commonly 6-12 lock points) is combined with anti-pick theft steel strips and anti-saw lock cores， which prolongs the technical unlocking time to over 30 minutes， perfectly meeting the Grade A standard of the "General Technical Conditions for Anti-theft Safety Doors".
When the first rays of morning sunlight penetrate the carved patterns on the door lintel, and when returning late at night and touching the cold yet solid door handle, we finally understand: a good entry door material is never just cold technical parameters; it is the combination of the firmness of steel, the refinement of cast aluminum, and the wisdom of composite materials, all of which are transformed into gentle forces that protect the family. Between the opening and closing of that door, lies our most simple and profound expectation for "home" - it should have both the armor to withstand the storms and the warmth to embrace life.