The small size of laptop brings new challenges to heatsink. Surprisingly, engineers have built a complete set of cooling modules in such a thin and light YOGA 3 PRO laptop: the industry’s first integrally molded cooling fan utilizing Metal Injection Molding (MIM) process, which is also the thinnest metal fan in the world. The entire fan thickness is only 3.5mm, and the blade thickness is only 0.15mm, which is equivalent to the thickness of one razor blade.