Wire line, why is red and blue? Why are there different colors?
Looks like our previous company cable bridge after the second anti-corrosion is silver-gray. This color or depends on the scene of the environment it
Then put the bridge into a galvanized trunking bar. Galvanized trunking slot cover, screw tightening whether it is electromagnetic protection or other protection is good. Or to change into a large PVC pipe. Cable, then, you can more than one row of PVC pipe.
Standard is not, that is the need to spend money to buy another
