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- Communication base station SPD
- Heavy industry machinery SPD
- Medical instruments equipment SPD
- Rail transit system SPD
- Onboard electrical application SPD
- Power supply system SPD
- SPD Circuit Breaker
- Lightning monitoring counter
- Commercial lighting power SPD
- DC power system SPD
- Ethernet surge protection device
- Control signal SPD
- Smart SPB of power supply system
- Special explosion proof SPD