... 4. equipped with central lock system, 50 shelves G-77 trolley for record(50 shelves)Size: 750*400*980mm1.the frame is ... and aluminum, antiseptic and easy to clean, move freely2. 50 shelves, equipped with central lock system.3. equipped with two small ... dia. Noiseless castors, two with brake trolley for record(50 shelves)