After the 3C fan is installed for a period of time, it is necessary to regularly maintain and protect the fan.1. Turn off the main power supply, make correspond···

Fire damper equipment is in great demand nowadays and is also required equipment in many buildings, which also reflects the willingness of today's market. Round···

After the 3C fan is installed for a period of time, it is necessary to regularly maintain and protect the fan.1. Turn off the main power supply, make correspond···

3C smoke exhaust fire damper consists of a casing, blades and a rotating shaft. The rotating shaft is installed on the casing, and an expanding sealing block is···

The smoke exhaust fire damper is installed on the supply and return air pipes of the ventilation and air conditioning system. It is normally open. When the smok···