# Two-phase

Part ID: 5.09b · Layer 5 (Liquid cooling (IT-side: chip to CDU)) · child of 5.09

Two-phase fluids that boil at hot surfaces and recondense elsewhere in the loop, used in two-phase immersion chambers and emerging two-phase cold-plate systems.

## Companies

| Company | Role | Confidence | Ownership | Ticker | Note |
|---|---|---|---|---|---|
| 3M | manufacturer | inferred | public | MMM | exiting Novec/PFAS end-2025 |
| Chemours | manufacturer | inferred | public | CC | Opteon |

Confidence tags: disclosed = company/filing statement; reported = trade press or partner list; inferred = taxonomy lead.