PCB Relay, Solid State Relay, Power Relay manufacturer / supplier in China, offering NNC Waterproof Limit Switch ESL4M-WL Series with Integrated Mold Aluminium Alloy Housing, Built-in Switch ESL4N Series Waterproof Limit Switch with Snap Action, NNC DC High Voltage Relay NN82A-300 300A Normally Open New Energy Relay and so on.