1,Copper wire tinning machine 450/750V. 2,10sqmm-185sqmm 3.PVC insulation ... Manufacturing Procedure: 1, Copper wire drawing and annealing.2, Copper wire stranding .3,PVC insulation extruding.4,Cores Twisting.5,Spooling. Main ... Quality Inspection Equipment:Spark Tester,Heating aging Chamber,High resistance machine ...