I produced the electric file-intensive cabinet and GB/T13667.3-2003 book shelf national standards development according to the National Archives DA9/T7-92 industry standards for organs, institutions and library, archives, sample room to store books, files, financial documents, goods. Audio-visual computer's hard drive storage, just to reprovision a dedicated framework can be compared with traditional bookcases, shelves, filing cabinets, large memory capacity, and more systematic. Construction: mobile Shelves, steel frame holder. Mainly by 20mm x 20mm square steel rail, 3.0mm chassis, 1.5mm complex column pole, 1.0mm shelf, the 1.2mm side panels, 1.0mm door, rotary actuator, anti-shock device, the fall-prevention devices, brakes and anti- dust, rodent control devices and other components. 2, material selection: In addition to the chassis, track, made of hot-rolled steel, and the rest are made of high-quality cold-rolled steel Shanghai Baoshan Iron and Steel (Angang). 3, section type, frame width, frame, the number of layers and the number of columns selected according to user needs. 4, track group three forms: ground, swash plate for ground and buried. Embedded track reserved trench bottom level deviation should be less than 1 mm, the deviation should be within the scope of track length is not greater than 4mm. The rack mounted vertical deviation less than 1mm, to achieve smooth vertical and horizontal. 5, the bottom group is generally sub-modular, high precision, with docking interchangeability, a wide range of section type, easy to transport and install. 6, the rotary actuator precision roller chains and bearings. Drive smooth and flexible, handwheel with the latest foldable Built-dial wheel, coupled with the the uneven plate panel of the CNC machine tool production more in fact, and nice. 7, each column automatic device equipped with a parking brake, side column equipped with a lock to access safe and convenient. 8, the contact of each column are buffered and sealing device, dust the top plate, bottom of rodent control device, which has a good dust-proof, rodent-proof, moisture-proof, fireproof, anti-shock function. 9, all parts of the surface of the mobile Shelves using electrostatic matt spraying after nine steps of degreasing, pickling, phosphating, resistance to environmental corrosion, the coating is firm, nice. 10 shelf with buckle hook support plate, a combination of flat and stable, the spacing of the layers can be freely adjusted as needed. Frame body shaking light resistance and sound, and clean. 11, each shelf uniform loading of 100 kg or more, For larger, can be designed. 12, factory according to the Treasury area and user requirements for rational distribution, if there are special sizes can be individually designed, constructed. Company website: http://www.jdmijijia.com/ the