1.Quality steel plate made by punching and shaping. 2.Heavy square bolts. 3. Elegant gearing equipment with anti-drilled high quality steel body 4.Multi-function LCD display. 5.Imported chip with double circuit panel. 6.Special anti-drilled lock. 7. Electrostatic powder coating ,corrosion resistance . 8. Dual alarm is provided for an additional protection in case of shocking and 3times wrong try. 9. 1-8digits Code-setting. 10. Emergency key and external electric supply 11Adjustable shelves 12.Anchor hole.