Will hot or cold weather affect the transportation of stem cells by cord blood banks or Boya Stem Cells?

This has nothing to do with the weather outside. I was storing my placenta at Boya. When their staff came, they brought a collection box and a large collection box. I was thinking at the time, why? Get such a big box, after all, the placenta is not big. Their staff said that there is blue ice in the collection box and there is some kind of system that constantly monitors the temperature inside the box, and also ensures that it is delivered within a certain time limit. It was processed by the laboratory. It was May when I gave birth, and the weather was quite hot, so it didn't have any impact.