... Material CNY 25-28/KGNiCrsi Alloy High Raw Material CNY>250/KG,High Ablative Resistance,Long Service LifeBoltA3 ... Powder Glass,Low ThermostabilityCopper Powder Conductive Galss,High Thermostabilityinner sealBolt Part Heating,Low Combination Between ... carving Insulator Capacityno test normallyPass 25-35KV high voltage test,high insulation perfomanceWhole AssemblyPoor quality stabilityLarge current ...