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Hollow Knob
Commercial use mechanical locks
Patented pressing home locks
Home use mechanical locks
Horn locks
Door hardware
Door lock strike plates
Doorstops
Staircase handrails
Disc embedded doorknobs
Sliding door locks
Door knobs
Aluminium handles
Tooling development
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Hollow Knob
Hollow Knob
Hollow Knob(5,7,KC-40 series)
Hollow Knob(6 series)
Hollow Knob(F series)
Hollow Knob(K series)
