If the decoration of the ceiling when the wire is not threading, how much harm you?
First of all, the line is generally used in water and electricity engineering for the use of the wall when the ground. First digging, re-pipe, and then lead in the tube. Finally, cement is used to close the slot. So that the first can have a protection on the wire to avoid the wire plastic insulation sleeve for a variety of reasons caused by rupture caused by short circuit. Also extended the service life. Secondly, because it is the first pipe, in the lead. So that the alignment can have a layout and control. Also, as the latter need to replace the wire, as long as the wire out, and then introduce a new line can be. If there is no pipe, then the wire will be bonded with the concrete wall, to replace all the knock. General ceiling above, if not into the wall of the line, there is no threading. One is not necessary, the second is not convenient post-maintenance operations.
Should be the software problem, it is recommended to find the software industry to communicate.
Irregular, need a few with a few, KVV 2-37 core are commonly used, need to contact.
Is the same as the vertical diameter of the same diameter on the left bend "and" vertical equal diameter on the right bend "is not just vertical bending
