... coat.4)Moment nut,piercing pressure is constant,keep good electric connection and make No damage to lead.5)Self-seam ... (Al) and Cu(Al) or Cu and Al.7)Small electric connection resistance,impulse currentcan be up to 15Ka.8)Special ... distribution system,the connection of airylow voltage insulated cable,or indoor electric wire,distribution system of street lamp.Can be installed with ...