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About Us
Product
Specification
DATA & Kinds
Composition, Connection & Circuit
Accessories
Limit switch, Push button switch, Safe device
Automatic closing device
Interlocking controller
Drop stop safety bearing
The remote controller
ETC.
Two steps operating shutter for fire protection
Screen for fire protection
Standards of automatic fire doors & shutters
Contact Us
info@ydkgroup.com
About Us
Product
Specification
DATA & Kinds
Composition, Connection & Circuit
Accessories
Limit switch, Push button switch, Safe device
Automatic closing device
Interlocking controller
Drop stop safety bearing
The remote controller
ETC.
Two steps operating shutter for fire protection
Screen for fire protection
Standards of automatic fire doors & shutters
Contact Us
Manufacturing Process 23
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