PCB Relay, Solid State Relay, Power Relay manufacturer / supplier in China, offering Pin Plunger Microswitch NV-21-2C36 21A normally open waterproof switch, NNC Waterproof MicroSwitch NV-16 with Pin Plunger and wire, NNC normally open microswitch NV-16W15-1C36 waterproof Electrical Switch and so on.