Why is the door to door maintenance fee so expensive?

It's hard to say. 。Look at the official website to see the game introduction. >>>More

It's unreasonable, it should be changed! You can complain like a dragon armor security door.

The door does not necessarily have its own lock cylinder brand Generally it is outsourced, such as the famous Panpan anti-theft door The high-end series uses CEI's colorful lock cylinder, which not only makes anti-theft doors and wooden doors, but also has its own brand of lock cylinder, which I know is Changen invincible CEI, which is a relatively high-end product. Adopt it, haha.

2 brands are not bad, good or bad is different in each region, for example, our city says that Wang Li is good, but not necessarily your city also says Wang Li is good, right, in fact, the quality of the anti-theft door to the 2 brands you said is really similar, that is, the lock has a good or bad point, an anti-theft door lock looks the same, the price may be different from tens of hundreds of yuan, I think you no matter which brand of door you choose, the most important thing is to choose a good lock.

Dragon armor, the quality is good, but the price is higher than 5 thick about 1200 yuan, and 50 yuan is charged for each thickened one.