colling box 1.Sustainable time for cold storage 72 hours 2.can store 6 cans 3.high quality esky 4,short lead time cooling box features: 1.Product insurable cold/hot than 72 hours.2. No electricity, the design is novel, refrigeration, energy conservation and environmental protection, physics, convenient.3 clean, safe, non-toxic, no corrosion, afraid of collision, convenient cleaning.4 can keep ...