Inquiry about Security Storage Boxes

I need high-strength polypropylene security storage boxes for precious metal storage. Quantity required is 500 pieces. Specifications include:  
- Material: High-strength industrial polypropylene, impact resistant  
- Colour: Blue or similar  
- External size: 600 x 400 x 320 mm  
- Minimum internal size: 560 x 180 x 100 mm  
- Carrying capacity: At least 130 kg  
- Load capacity: At least 150 kg  
- Stack capacity: 250 to 300 kg  
- Empty weight: 3.5 to 5.0 kg  
- Locking: Two lock placements suitable for security seals  
- Handles: Two or four ergonomic open handles  
- Design features: Foldable construction, reinforced corners and side walls, anti-impact ribbing, non-slip stacking base  
- Lid type: Dual hinged, interlocking folding lid attached to the body  
- Corrosion resistance: Non-corrosive plastic  
- Temperature tolerance: –20°C to 60°C