Compared with security doors, which one is of better quality? What about Dedun Technology?

Dedun security door is better in the security door industry. In terms of quality, the relative main materials and auxiliary materials are solid, and an ordinary door can reach nearly 300 kg. There is also a German patented anti-prying steel technology. It should be said that the door of this technology is difficult to open at present, so it is best to leave the spare key outside.