C2675 Vacuum Insulation

As it turns out, it's a little inappropriate!

But for a moment, Qin Luo could not think of any good ideas.

"Is there any other material that can withstand fire and high temperatures?" After pondering for a while, Qin Luo asked.

Zhang looked at Qin Luo nervously and said carefully, "Actually, there is, but he is not a material."

"What is that? Tell me about it. "

"Professor Qin, in fact