Technical parameters: Models: 6KX - 30 Specifications: Box internal specification: 440x254x285 MM External specification of box body: 520x323x345mm Weight: box net weight: 5.8kg Material: Material: PP or ABS Case insulation material: polyurethane Packing material: rubber Volume: empty box capacity: 31L Cold time: under normal temperature 8 ℃ can keep more than 30 h; 2 ℃ 8 ℃ can keep more than 24 hours