Definition and Core Structure of Fluent Shelves Fluent shelving is a storage equipment that relies on "gravity sliding" to achieve automatic turnover of goods. Its core is used in "first in, first out" scenarios and is widely used in high-frequency picking fields such as e-commerce and manufacturing. Its structure consists of columns, beams, fluent bars (roller/drum components), and guiding devices: the columns and beams form the main frame, made of cold-rolled steel, and the surface is treated with electrostatic spraying for rust prevention; Fluent strips are installed parallel to the crossbeam at an inclination angle of 3 ° -5 °, with high-strength plastic or metal rollers embedded inside. The roller spacing is designed according to the size of the goods (usually 10-15cm) to ensure smooth sliding of the goods; The guiding device is located on both sides of the fluent strip to prevent the goods from shifting when sliding. Compared with traditional shelves, the core difference is that there is no need for manual handling of goods, only high-end replenishment and low-end pickup are required, greatly reducing picking actions and improving operational efficiency.