* The series is compliance to UL and CE certification.
* Widely used for wood doors, iron doors, stainless steel doors, glass doors, and can be controlled by access control system. 
* Made from special magnetic materials in adoption of a particular processing technique that will not produce excessive magnet after a long period.
* The armature board will not be magnetized or causing the reduction of suction force after a long-time used.
* The products present no mechanic failures, no abrasions, and no noises with a longer service life.