What is the difference between Class A and Class B? How can someone say that it is very good to buy

Grade A doors are thicker and the price is also high, basically more than 2,000 yuan; If you are in grade B, you can buy it for 1,000 yuan.

1. The anti-theft door is generally divided into 4 grades, namely A, B, C, D, of which A is the best and D is the worst. The main basis for differentiation is based on the thickness of the surface material of the anti-theft door and the time of vandal-proof opening.

2. Generally speaking, the anti-theft doors used in the home are Class D, and the better ones are Class C. Grade A and Grade B are better, but they are more expensive, so they are more spoonful. So Grade B is really good, and it's completely enough for families.

Level Door frame Front panel Rear panel Door lock level Technology open Violent opening Class A Level B At least 5 minutes At least 30 minutes Class B Class A At least 1 minute At least 15 minutes, it is good to use Grade B at home, unless your home is very unsafe or there are very valuable things at home. As for other business establishments or special places, there are regulations requiring that they must be Grade A or above or B.