Repair of dvh. Mem6rvny dvh, Ukraine

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The inscription on the package of orange juice "Tonus".
In Russian: "Keep an open package in the refrigerator for no more than a day".
In Ukrainian: "Keep the opened package in the refrigerator at a temperature of 2 to 6 C for no more than 3 days." What concern for the Russian consumer. What is good for a Russian for a day, a Ukrainian can drink for two more days. Or is it about survival?