The unit is comprised with evaporating plates, hydrostatic transmission system, thermal insulation housing (thermal insulation door for ship), etc. The unit is up to the international hygienic standard of processing aquatic products and its whole structure is compact with reliable non-corrodibility and convenient operation. The thermal insulation door may put to use open-door, sliding door and rolling door according to the requirement of user.The unit is applicable for the quick-freezing of seafood, meat products vegetables and foodstuffs in small packages processed in ships, freezers and other foodstuff-processing industries. producing area:China