the absolute necessity of safeguarding military weapons during shipping and storage is obvious to everyone in the forces.the best way to ensure that all weapons,weapon parts,maintenance equipment,and weapon systems will arrive intact and combat-ready is by using the best reusable shipping cases available.JinHouDun Mobile Armory cases are designed to protect weapons fromshock,humidity,rain,dust,saltwater,and extreme environment conditions. 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.