KNRS Series Industry plugs, sockets ,couples and appliance outlets with the function of dustproof,waterproof,weatherproof as well as flameproof,heat-resistance,anti-aging are convenient to be connected. Those products can match with the similar components around the world and they can replace the motor plug and socket. they are mainly used in Iron and steel smelting,petrochemical,power,electronic,railway,building,airport,stop,water draining,port,mall and so on. They are ideal power devices.