solider kit box have been procured and/or tested under numerous MIL-SPEC testing and certification procedures. including: airdrop, salt fog, cargo bounce, submersion, temperature and humidity, vibration limits. we have received ISO 9001:2000 certification for our facility. product characteristic 1).all the products have got ISO9001.2000 certificate. 2).product character:durable,reusable,Water Tight, Vibration Proof, Dust Proof,Shock Proof,Light Weight,Stackable,salt fog-resistant,heat-resistant Chemical Resistant, Corrosion Proof, Super Strong Latches, Fully Lockable for Added Security,Ultra High Impact PE, Hih Denisty Foam Iserts.the case can also have Valve for Quick Equalisation to Atmospheric Pressures. 3).mil-spec test in laboratory :stacking ,Drop Test,high temperature,low temperature, Immersion ,shake , handle etc. 4).mil-spec test in field situation: airdrop,waterproof,pressure-proof. 5)all the products equipped China People's Liberation Army.