Portable stacking racks are multi-tier pallet racking systems that optimize storage space by vertically stacking goods and materials. These racks are designed to hold heavy loads – ranging from light materials to heavyweight industrial products, which cannot normally be stacked. The key advantage of stack racks over traditional shelving systems lies in their ability to increase warehouse storage space by utilizing vertical space, thus reducing the physical space requirement. Moreover, its flexible nature allows for customization to fit specific storage needs and configurations.