• We have redesigned the structure of the harness to distinguish it from the traditional fixed or swivel mounting structure. Suction power up to 11000gs through ruthenium-vanadium magnets combined with 8.8-grade stainless steel pins. Now it can be unfolded/collapsed between shelves. Or make a one-time distance adjustment with a large span, switch between high protection and low security households, and coexist with safety and convenience.