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This is a video to demonstrate how to use the On-door Code-Change System of our product DL3815. The code "479" was being changed to "368".
This is how we tested the durability of our code lock DL3773. We had repeated the cycle for more than 100,000 times until the angle between the handle and the lock body was not perpendicular.
This video is showing the Computer Numerical Control (CNC) drilling machine used in the production process of interchangeable core padlock.
This video is showing the mass production of window fittings by die-casting. The material used for this item was aluminium alloy.