Founded in 1998, Mingmen is a high-tech enterprise integrating R&D,manufacturing marketing and serviceof silent door locks, smart door lock and hardware.Since its establishment, the company has always been focusing on the field of silent door locks, committed to creating a world-class brand of mute door locks, and has become synonymous with "silent door locks" 47 invention patterns27 invention patterns relating to silent door lock systemDrafter of silent door lock standard65 structure engineers, 20 electronic engineers, 5 product appearance designersThe first fully automatic production line for silent mortiseThe first fully automatic polishing lineThe most advanced anti-static clean roomThe first anechoic chamber for door lock & hardware CNAS certified testing lab