Reference · vendors layer v2026-10-08 · 97 companies
Liquid cooling supply chain — who makes what
The industry runs one chain: chips create the heat → cold plates and CDUs capture and move it → couplings and racks hold it together → dry coolers and towers reject it → the facility pays for it. 97 companies across 16 segments, mapped below — each entry links the company's official site; notes state its liquid-cooling role only.
Materials & precision manufacturing (upstream)
Before anyone builds a cold plate: copper and aluminum stock, CNC machining, vacuum brazing, sheet metal — the invisible margin layer of the whole chain.
| Company | HQ | Role in liquid cooling | |
|---|---|---|---|
| Jiangxi Copper | CN | 江西铜业 — copper stock and semi-finished inputs for cold plates and manifolds | site ↗ |
| Chalco (Aluminum Corp of China) | CN | 中国铝业 — aluminum inputs for manifolds, cabinets and heat exchanger fins | site ↗ |
| Aurubis | DE | Copper semi-finished products into European thermal chains | site ↗ |
Chips — where the heat starts
Accelerator power is the demand driver: 700-1,000+ W per package made liquid cooling mandatory above ~30 kW/rack.
Cold plates & in-server cooling
The chip-touching layer: machined/brazed plates, microchannels, heat pipes. Many also build CDUs and full loops.
| Company | HQ | Role in liquid cooling | |
|---|---|---|---|
| CoolIT Systems | CA | Largest independent cold-plate supplier; also CHx-series CDUs; partner in the 2018 STULZ micro DC | site ↗ |
| Asetek | DK | Cold plates and RackCDU/InRackCDU systems; HPC heritage (listed in Oslo) | site ↗ |
| Boyd Corporation | US | Thermal conglomerate: cold plates, liquid loops, CDUs; high-volume manufacturing | site ↗ |
| Auras Technology | TW | Major Taiwan cold-plate supplier into AI server ODM chains | site ↗ |
| Wakefield-Vette | US | Cold plates and heat exchangers, industrial-to-server range | site ↗ |
CDUs — pumps & heat exchangers
The heart of every loop: in-rack / in-row / facility CDUs from component level to multi-MW.
| Company | HQ | Role in liquid cooling | |
|---|---|---|---|
| Vertiv | US | CoolChip CDU family (incl. CDU 70 / XDU070 — one of few publishing capacity-vs-ambient curves) | site ↗ |
| Motivair | US | CDU leader at AI-facility scale; acquired by Schneider Electric (2024) | site ↗ |
| CoolIT Systems | CA | CHx-series in-row CDUs alongside its cold-plate business | site ↗ |
| Boyd Corporation | US | CDUs plus full liquid-loop integration services | site ↗ |
| Asetek | DK | RackCDU in-rack systems, liquid-to-liquid focus | site ↗ |
| nVent | US | Rackmount CDUs + Hoffmann edge-rack liquid portfolio (RackChiller) | site ↗ |
| Daikin | JP | Applied CDUs on its refrigeration/HX base; strong in APAC AI halls | site ↗ |
| Delta Electronics | TW | CDUs plus power/thermal integration for AI racks | site ↗ |
| ZutaCore | IL | Two-phase direct-to-chip: dielectric fluid boiling on the plate | site ↗ |
| JetCool | US | Microjet impingement plates + cabinet-level liquid systems | site ↗ |
| Chilldyne | US | Negative-pressure direct-to-chip: leaks suck air in, not fluid out | site ↗ |
| Envicool | CN | 英维克 — China's largest domestic data-center cooling vendor; CDUs and integrated liquid systems for AI halls | site ↗ |
| Goaland | CN | 高澜股份 — liquid cooling for power electronics and data centers; strong domestic AI-facility presence | site ↗ |
Quick disconnects & manifolds
The interoperability layer: UQD-class couplings and rack manifolds decide whether you can mix vendors.
| Company | HQ | Role in liquid cooling | |
|---|---|---|---|
| Stäubli | CH | Dry-break coupling benchmark; OCP UQD-compliant lines | site ↗ |
| CPC (Colder Products) | US | Dripless quick disconnects across UQD sizes | site ↗ |
| Parker Hannifin | US | Coolant couplings, hoses and manifold assemblies | site ↗ |
| nVent | US | ORv3-class racks and blind-mate manifold systems | site ↗ |
| Rittal | DE | Rack/manifold hardware alongside its LCP cooling line | site ↗ |
Liquid-ready servers (OEM/ODM)
Who ships servers with cold plates and UQD ports pre-installed — the open-ecosystem demand side.
| Company | HQ | Role in liquid cooling | |
|---|---|---|---|
| Dell Technologies | US | PowerEdge with factory DLC options for AI racks | site ↗ |
| HPE | US | Cray EX liquid-cooled EX2500/EX2550 blades; long HPC liquid heritage | site ↗ |
| Lenovo | CN/US | Neptune direct liquid cooling across ThinkSystem line | site ↗ |
| Supermicro | US | Broad DLC server catalog, liquid-first AI portfolio | site ↗ |
| Gigabyte | TW | Liquid-ready GPU servers for AI/HPC | site ↗ |
| Huawei | CN | 华为 — liquid-ready rack servers plus facility liquid-cooling lines for AI data centers | site ↗ |
| Inspur | CN | Liquid-cooled AI server lines at hyperscale volumes in CN | site ↗ |
| H3C | CN | Liquid-ready servers and rack integration | site ↗ |
| Sugon | CN | Immersion-cooled HPC systems heritage | site ↗ |
Immersion cooling
Whole-server submersion: single-phase oils or (post-PFAS) engineered dielectrics.
| Company | HQ | Role in liquid cooling | |
|---|---|---|---|
| LiquidStack | US | Single/two-phase immersion at scale; OCP contributions | site ↗ |
| Submer | ES | Single-phase immersion pods + SmartCoolant services | site ↗ |
| GRC (Green Revolution Cooling) | US | Electroless mineral-oil immersion, longest deployment track record | site ↗ |
| Asperitas | NL | Immersed computing in oil, circular-flow designs (image used on our immersion page) | site ↗ |
Coolants & chemistry
PG25 water-glycol dominates direct-to-chip post-PFAS; immersion needs engineered dielectrics.
| Company | HQ | Role in liquid cooling | |
|---|---|---|---|
| Dow | US | DOWFROST/WF glycol lines behind most PG25-class coolants | site ↗ |
| Clariant | CH | Inhibited glycols and coolant additives | site ↗ |
| Dynalene | US | Engineering coolant specialist (glycols, dielectrics, sampling services) | site ↗ |
| Engineered Fluids | US | Single-phase immersion dielectrics after the PFAS exit | site ↗ |
| 3M | US | Novec fluorinated fluids — exited PFAS manufacturing end-2025 (timeline on our radar page) | site ↗ |
Heat rejection — where the heat lands
Dry coolers, towers and heat exchangers: the facility side that L2L loops and free cooling depend on.
| Company | HQ | Role in liquid cooling | |
|---|---|---|---|
| Baltimore Aircoil (BAC) | US | Cooling towers and dry coolers; the evaporative baseline | site ↗ |
| EVAPCO | US | Dry coolers/adiabatic lines for warm-water loops | site ↗ |
| SPX Cooling | US | Marley towers and cooling infrastructure | site ↗ |
| Kelvion | DE | Industrial heat exchangers and dry coolers | site ↗ |
| Alfa Laval | SE | Plate heat exchangers — the HX inside many CDUs | site ↗ |
| SWEP | SE | Brazed-plate heat exchangers, compact CDU-scale | site ↗ |
Pumps, valves & sensors
The quiet layer inside every loop: circulators, control valves, flow/pressure instrumentation.
| Company | HQ | Role in liquid cooling | |
|---|---|---|---|
| Grundfos | DK | Circulator pumps from server loops to facility scale | site ↗ |
| Wilo | DE | Pump groups for cooling circuits | site ↗ |
| Danfoss | DK | Valves, controls and sensors for hydronic loops | site ↗ |
| Xylem | US | Bell & Gossett pump/heat-transfer portfolio | site ↗ |
| Dwyer (Ametek) | US | Pressure/flow instrumentation used in loop monitoring | site ↗ |
| TTK | FR | Liquid leak-detection cable systems for racks and rooms | site ↗ |
Facility cooling & integration
Precision-cooling majors and data center integrators who assemble the room side.
| Company | HQ | Role in liquid cooling | |
|---|---|---|---|
| Vertiv | US | Full-stack: CDUs, chillers, AHUs, micro DCs (VRC-S) | site ↗ |
| Schneider Electric | FR | Uniflair/cooling + EcoStruxure micro DCs; acquired Motivair (2024) | site ↗ |
| STULZ | DE | Precision cooling; 2018 Micro DC with CoolIT still the turnkey benchmark | site ↗ |
| Rittal | DE | Racks, LCP air cooling, liquid manifold hardware | site ↗ |
| Munters | SE | Cooling and climate control for data centers/industry | site ↗ |
| Johnson Controls | US | York chillers and facility integration | site ↗ |
| Trane Technologies | US | Chiller plant side of L2L deployments | site ↗ |
Small-scale / micro DC (the 20-50 kW frontier)
Our comparison data layer tracks this segment: air-cooled micro DCs stop ~10 kW; liquid turnkey starts at component level. The middle is the gap.
| Company | HQ | Role in liquid cooling | |
|---|---|---|---|
| Schneider Electric | FR | EcoStruxure Micro Data Center — air, 6U-43U, ~3.5-10 kW class | site ↗ |
| Vertiv | US | VRC-S micro DC (air ~3.5 kW); CoolChip CDU 70 for AI racks | site ↗ |
| STULZ × CoolIT | DE/CA | 2018 Micro DC — the only full turnkey liquid micro-cabinet predecessor (27-80 kW) | site ↗ |
| nVent / Hoffman | US | Edge liquid portfolio: 'add liquid cooling without changing the room' | site ↗ |
| Asetek | DK | InRackCDU 80-120 kW/rack, HPC-oriented, needs tempered water | site ↗ |
Solutions & engineering (non-equipment)
The non-equipment layer: design institutes, EPC/engineering consultancies, simulation software and certification — plus solution providers who assemble whole liquid-cooling plants across other vendors' hardware.
| Company | HQ | Role in liquid cooling | |
|---|---|---|---|
| Sugon DataEnergy (曙光数创) | CN | 中科曙光旗下 (NEEQ 872808) — full liquid-cooling solutions: cold-plate + phase-change immersion dual track; C8000 immersion rack rated >900 kW/rack; #1 domestic liquid-cooling share five years running (CCID) | site ↗ |
| AECOM | US | Data center design and EPC engineering — the firms that turn cooling physics into buildings | site ↗ |
| WSP | CA | Engineering consultancy: mechanical/thermal design for data center projects | site ↗ |
| Jacobs | US | Design, engineering and program management for mission-critical facilities | site ↗ |
| Cadence (6SigmaDCX) | US | Data center CFD and digital-twin simulation software (Future Facilities acquisition) | site ↗ |
| Siemens (Simcenter FloTHERM) | DE | Electronics thermal CFD — cold-plate and rack airflow simulation | site ↗ |
| Uptime Institute | US | Tier certification and data center consulting — independent of every equipment vendor above | site ↗ |
Testing & certification
Independent verification between builders and buyers: safety certification, performance curves, thermal benchmarking — where marketing claims go to be checked.
| Company | HQ | Role in liquid cooling | |
|---|---|---|---|
| UL Solutions | US | Safety certification incl. liquid-cooling components (UL mark) | site ↗ |
| TÜV Rheinland | DE | CE-route testing and performance verification for EU deployments | site ↗ |
| SGS | CH | Inspection, testing and certification services | site ↗ |
| CAICT (中国信通院) | CN | China Academy of Information and Communications Technology — domestic liquid-cooling evaluation and standards work | site ↗ |
Buyers & operators — where the money starts
The demand the entire chain exists for: hyperscalers, clouds, telcos and colocation — their rack-power roadmaps set every upstream design decision.
| Company | HQ | Role in liquid cooling | |
|---|---|---|---|
| AWS | US | Hyperscale demand driver; custom rack programs reach 100+ kW | site ↗ |
| Microsoft Azure | US | Liquid-cooled AI infrastructure at hyperscale | site ↗ |
| Google Cloud | US | TPU pods and GPU fleets push liquid-first rack designs | site ↗ |
| Alibaba Cloud (阿里云) | CN | 浸没式液冷规模化部署的先行者（仁和数据中心） | site ↗ |
| Tencent Cloud (腾讯云) | CN | T-Block 与液冷数据中心批量部署 | site ↗ |
| China Mobile (中国移动) | CN | 运营商智算中心集采——国产液冷链的最大单一买方之一 | site ↗ |
| Equinix | US | Colocation; xScale JV builds for hyperscale tenants | site ↗ |
| Digital Realty | US | Global colocation platform tracking high-density liquid deployments | site ↗ |
| GDS (万国数据) | CN | 头部第三方 IDC，液冷智算集群批量落地 | site ↗ |
| VNET (世纪互联) | CN | 第三方 IDC 与智算中心运营商 | site ↗ |
| Chindata (秦淮数据) | CN | 超大规模数据中心园区，东南亚/中国液冷部署 | site ↗ |
Standards & industry bodies
Who defines interoperability and safety — cite them in every RFQ.
| Company | HQ | Role in liquid cooling | |
|---|---|---|---|
| Open Compute Project (OCP) | US | UQD couplings, ORv3 racks and blind-mate manifolds | site ↗ |
| ASHRAE | US | W-class facility-water temperature framework | site ↗ |
| IEC | CH | IEC 62368-1 Ed.4 — electrical safety incl. liquid clauses | site ↗ |
| Enterprise Singapore | SG | SS 726:2026 — first tropical liquid cooling standard | site ↗ |
Reading the map
- Consolidation is real: Schneider acquired Motivair (2024); several majors bought their way into CDUs. Ownership shifts faster than this page — verify before contracting.
- Interop lives in the middle boxes. If your cold plates, CDU and couplings all speak OCP (UQD, ORv3), you can mix rows across vendors — that is the whole lock-in defense (UQD table).
- The 20-50 kW frontier is thin. The micro-DC segment below still shows the gap our comparison data documents — air cabinets stop ~10 kW, liquid turnkeys barely exist.
List your company
Missing from the map, or wrong? Listings are free, editorially reviewed, and never paid — independence is this site's product. Email [email protected] with the fields below (the template is pre-filled if you click), and we verify against an official source before anything enters the data layer:
HQ (country): ____
Segment (one of the 16 above): ____
Role in liquid cooling, one line: ____
Official site URL: ____
Source URL verifying it (product page / datasheet): ____
Corrections to existing rows go to the same address. Listing is not an endorsement; the changelog records every data-layer change.
Related
Cabinet comparison · RFQ scope checklist · UQD quick disconnects · Standards
Sources & policy
Company roles per their official sites (linked per row); segment placement reflects each company's liquid-cooling-relevant business as of 2026-10-08. No funding, revenue or market-size claims — out of facts-policy scope. Corrections via the changelog.