Dear Sir Madam,Material:Aluminum AlloyBusiness type:ManufacturerVacuum warranty:5 yearsStatic holding time:132daysUsage:semen storage artificial insemination cryogenic storage cryotherapyType:Extended-time transport & storage dry shipperMax.capacity of 0.25ml straws:5022 8460Max.capacity of 0.5ml straws:2244 3624of canisters:6 pcsPainting:2layer painting