Summary:Now the use of fire doors is more and more common, because the fire door is indispensable in many places, its use is also very wide.But if the fire do......
Now the use of fire doors is more and more common, because the fire door is indispensable in many places, its use is also very wide.But if the fire door is broken, how should it be repaired?That's a question that a lot of people don't know.
In case of failure, maintenance should be carried out by professional personnel or contact with suppliers and manufacturers for maintenance.In order to avoid the failure to expand the impact of use.
Fire door controllers should be kept clean to prevent erosion by water or other harmful substances.It is strictly prohibited to use organic solvents when cleaning the casing
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