Shelves can be single or multiple columns to walk together on the rails, each column has a parking brake system (self-locking handle). Self-locking handle in the OFF position, the frame body can not be moved, in the ON position, the movable frame body, the side panel of the frame body of each column label box, there are anti-down device works on a mobile column at the end of each combination box Each column is equipped with front and rear total lock for locking the whole, played the role of confidentiality, limit device attached to the end of the rail. Archives Access shake the handle clockwise or counterclockwise, the movable frame to steady walking on the track, the second frame body adjacent stall when moving away from a certain location (there is sufficient access location information), clockwise two columns frame Self-lock handle to the OFF position, then re-shake the handle, two frame body can not move, and then enter the access data between the frame body can not lock the frame body (such as the rotation of the lock handle, you can turn the hand wheel slightly to be able to pull Self-locking handle can not be forcibly locked, so as to avoid self-locking pull handle broken or damaged self-locking device). Shelves Shelves lock each group can put 400 standard file boxes, the middle section of each layer has bookends were separated for easy classification and use. Intensive cabinet Shelves of each load bearing 40kg, 80kg load-bearing layer of double-sided