Flexible system uses bar-plastic tube with a wide variety of coupling with, a combination of various forms of digital equipment, has been widely used in household appliances, automobiles, light industry, electronics and other factories, logistics integration is an essential tool . Wire rod flexible system can meet the needs of the production site of continuous improvement, Ergonomic, accurate operation is on-site staff, comfortable environment of rapid implementation of ideas and creativity. At the same time, it has a light, strong, surface clean, wear-resistant, easy to process, can adapt to different size and shape and other characteristics, so that the user personalization solution can be achieved. Bar, also known as covered plastic pipe, lean management, logistics management, welded steel pipe with a plastic resin coating to prevent separation of the coating and the pipe, using a special adhesive bonding between them. The inner wall of the steel pipe anti-corrosion coating. Raceway is made of a metal roller stand, ABS wheel, ABS holding strip and spring steel roller shaft components, mainly for the sliding shelves.