The fluid they use for cooling is either <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Fluorinert" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Fluorinert</a> or <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Novec_1230" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Novec_1230</a>.