There is a single core and multi-core in the wire and cable, there will be not understand the user has a question, 3+2 core and 4+1 core, look at are 5 core, that there is no difference between these two in the end?Below small make up to in...

General wires and cables are insulated with plastic and rubber sheathing, these materials are regular standard materials, have a rich source, can meet the requirements of mass production, and the cost is relatively low.But for some special...