How big are the big Roman columns of the security door

To give you a reference value you will know how to configure, generally the height of the Roman column is nine to one-tenth of the diameter, know the height can find the diameter.

First of all, drip vegetable oil or liquid engine oil at the three hinges, and then switch a few times to let the oil soak into the rotating part of the hinge, and then deal with the middle, which can be penetrated and fixed with long screws.

In terms of products, the basics are almost the same, the process details and styles have changed a little, the main difference is the popularity and scale of the two brands, Panpan is the boss, there is no doubt about it.

Yujia brand unlockless and non-hole remote control anti-theft door, you can open the door with remote control and phone, convenient and practical!

If you choose it personally, it is still Longyang, but it is recommended that you choose among the top ten brands, rest assured.