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What Is a Fixed Temperature Heat Detector?
Happy Dragon Boat Festival！
What is a fire alarm bell?
What is a Rate of Rise Heat Detector?
What Is a Photoelectric-type Smoke Detector?
What is a smoke detector?
Happy Lunar New Year!
Happy New Year!
What Is a Manual Call Point?
What Is a Fire Indicating Lamp?
What Is a Remote Indicating Lamp?
Happy Double Tenth Day!
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