Does the security door feel a little loose and has a safety hazard?

First, the anti-theft security door anti-vandalism test is unqualified. The standard stipulates that the anti-theft security door should not be able to open the door or cut a 615 square centimeter opening through the door body within the net working time (15 minutes) specified in Class A under the mutual cooperation of ordinary mechanical hand tools, portable power tools, etc. The main reason for this disqualification is to cut corners, such as thin materials, no or less reinforcement of the skeleton, and the most serious is to make a honeycomb shape with thin cardboard and then fix it in the door panel with glue. >>>More

If you really want to open the door of your house, it is useless for you to do anything, even if you buy the best Grade A anti-theft door on the market, the strongest anti-theft performance, and the technical unlocking can be done in 5 minutes. >>>More

Yes But whether it is electricity or natural gas, there will be safety hazards, as long as you pay attention to the problem, it is not a big problem! Popularization is a problem: Wood is used to cook rice every day in rural areas.

Everything will break down over time.

In the process of using electrical appliances, improper operation causes safety problems, and there are also some. >>>More

Yes It can even be said that it is impossible to do enough support support. Generally in the building code, this kind of balcony with large depth, even if it is convex, has begun to be calculated according to the full area, so the developer uses less and less, after all, it is difficult to produce a higher premium, to really do, the calculation of the structural system is to be calculated, so as to meet the load of the large depth cantilever.