Apply for the mobile phone bundle unit security door

The specific criteria are not known.

But when you put it on, it's stuck on it, it's high above the ground, and you put some cement on it in the ground, and you wipe the seams, and it's over. >>>More

Check to see if the sealing strip of your security door is invalid, and replace it if it fails.

Of course it's not legal, just call the police.

To do the second level, first of all, the registered capital of the business license is more than 1 million, the use area is more than 80 square meters, two senior engineers, 10 intermediate title personnel, holding the original and copy of the license, the original and copy of the housing lease contract, the original and copy of the employee's title, the copy of the ID card to the local Municipal Public Security Bureau Technical Defense Office for review, after passing the letter, to the Industrial and Commercial Bureau to increase the phase, the equipment includes: oscilloscope, field strength meter, illuminance meter, computer, plotter, shake meter, three-purpose meter, impact drill, Municipal bureau personnel to the scene audit, after passing the materials submitted to the Provincial Public Security Department of the technical defense office, technical defense office personnel on your company again, qualified, issued a certificate.

Unit door, community unit door is generally used in the current large and small areas of the door, do a lot of manufacturers of unit door security doors, if you want to do this kind of door, mind if you choose a good building door manufacturers, like Changzhou Baicheng door security door, Shanghai Baijun unit door, Changzhou card door door industry unit door is excellent Don't care whether the name is the same, in fact, it is a kind of door, don't be deceived by the senior name of some dealers.