C2709 Everything Is Ready

"That's right!" Zhang Donglai nodded and said, "Professor, after we found the vacuum heat insulation material, we had repeated experiments. Finally, we have determined that vacuum can only lower the temperature of the heat radiation to about 70 degrees. If we want to lower it, we need to think of other ways. "

"What about adding the water-cooled equipment?" Liu Zhidong frowned slightly