This type is the "backbone" of warehouses and workshops, characterized by very high durability. Materials: Made of galvanized or powder-coated steel to resist rust. Load Capacity: Designed to withstand heavy weights ranging from 200 kg - 500 kg per shelf. Design: Often feature a "snap-together" (boltless) system for easy assembly and adjustment. 2. Wire Shelving (Lightweight Metal) Ideal for kitchens, laundry rooms, or areas requiring good ventilation. Features: Allows air and light to pass through, preventing dust and moisture buildup. Appearance: Come with elegant finishes (chrome or matte black) to suit interior decor. Flexibility: Often equipped with wheels for easy transport. 3. "Polymer" or Reinforced Plastic Shelving The best choice for damp or cold environments (like large refrigerators or cleaning rooms). Features: Completely resistant to chemicals, rust, and bacteria. Cleaning: Easy to disassemble and assemble, and can be washed in industrial dishwashers.