Cold Room Door - want to buy - Greece

companies from the cooling section are importing doors for cold rooms from Turkey as the price is lower than Italians,Greek,and Spain!I am interested in importing a quantity and at first only of hinged doors for maintenance,and freeze with up to 3 different thicknesses 8cm,10cm and 12cm and dimensions 1.90×0.90 and 2×1.I would like to know some of course the minimum order,the price per piece ,the certification of the doors ,the way of payment etc.