300kg precise load-bearing design, suitable for small, medium, and large size goods storage with strong stability. Made of high-strength steel, thickened beams + reinforced columns, sturdy and non-deformable. Easy assembly without professional tools, single person can install quickly, time-saving and labor-saving. Multi-layer adjustable design, free height adjustment, flexibly fits, goods of different sizes. Anti-rust spray coating on surface, moisture-proof, and corrosion-resistant, extending service life. Compact structure saves space, suitable for warehouse, workshop, e-commerce storage and other scenarios. Safety buckle design, prevents laminate from sliding, ensuring goods storage safety. Uniform load distribution, each layer stably bears 300 kilograms, avoiding local deformation.