Special Issue 6 | Thermal Management Industry Chain: Four Billion-Dollar Acquisitions in One Year—What Are the Giants Actually Buying?

I. Core Thesis: Liquid Cooling Has Evolved from a Niche Product into Mainstream Infrastructure As explained in the earlier piece on power supply and thermal management, the underlying physics is clear: air cooling hits its ceiling at around 20–30 kW per rack, whereas AI racks now exceed 100 kW—e.g., the GB200 NVL72 reaches approximately 120 kW—necessitating direct liquid contact with chips. This article adds the industrial logic: just how large is this shift from air to liquid cooling, and how is value distributed across the chain? Market size figures: the liquid cooling market is projected to reach ~$4.8 billion in 2025, ~$6.0 billion in 2026, and ~$27.1 billion by 2035—a compound annual growth rate (CAGR) of roughly 18%. Its fundamental value proposition can be summed up in one sentence: liquid cooling reduces cooling energy consumption by over 30% compared to conventional cooling. In an era where 'saving electricity equals expanding capacity,' every watt saved on thermal management directly translates into sellable compute power. That is the logic behind the giants’ checks. II. Industry Narrative: Ecolab’s $4.75 Billion Acquisition—What Was Really Bought? Among the four acquisitions, Ecolab’s purchase of CoolIT stands out as the most instructive—precisely because it is most easily misunderstood. Ecolab is a global leader in water treatment, primarily providing industrial customers with water chemistry solutions—corrosion inhibition, scale prevention, and water quality monitoring. Its $4.75 billion acquisition of CoolIT—a leading manufacturer of CDUs (Coolant Distribution Units) and cold plates—was initially perceived by markets as 'a water treatment company venturing into hardware.' But the real strategic calculus lies in the business model: hardware is a one-time sale; chemicals generate recurring annual revenue. Once a liquid cooling system is operational, coolant degrades, piping corrodes, and water quality requires continuous monitoring—creating a consumables-and-services-based recurring revenue stream. This is precisely Ecolab’s core competency. By bundling CoolIT’s CDU hardware with its own coolant chemistry and water management services, Ecolab did not acquire merely a hardware vendor—it acquired the 'consumables entry point' for the entire liquid cooling era. This contrasts sharply with Eaton’s acquisition of Boyd: Eaton (a power infrastructure giant) sought thermal management capability to complete its 'power + thermal' rack-level integrated offering; Ecolab, meanwhile, acquired hardware access to transform thermal management into a chemical-based recurring revenue business. Though both deals involved multi-billion-dollar checks, what was purchased differs fundamentally—understanding this distinction matters far more than memorizing the acquisition amounts. III. Layer-by-Layer Breakdown of the Thermal Management Value Chain: Six Layers Outward from the Chip Unfolding the thermal management chain outward from the chip reveals six layers—each with distinct revenue characteristics. Layer 1: Cold Plates—the metal component mounted directly onto the chip. This is where liquid flows through microchannels to extract heat directly from GPUs. Market leaders include CoolIT’s OMNI microchannel cold plates and Boyd, alongside Asetek. Note a key signal: both top players in this layer have already been acquired—CoolIT by Ecolab, Boyd by Eaton. Independent pure-play vendors are vanishing, elevating the scarcity—and thus valuation—of remaining independent players. Layer 2: CDUs—the concentration of value and the first layer experiencing intensifying competition. The CDU serves as the 'heart pump station' of a liquid cooling system, regulating coolant temperature, flow rate, and pressure. It is required in virtually every liquid cooling deployment. It represents the largest component market: ~$2.38 billion in 2025, accounting for ~35% of the total liquid cooling market.

International Financial News, April 4, 2026

19. The CFETS RMB Exchange Rate Index (morning session, April 4) stood at 100.87; the central parity rate for the RMB was 6.8929; the onshore RMB exchange rate was 6.8859; the offshore RMB exchange rate was 6.8863. 20. Bitcoin price stabilized near $66,870, posting a weekly decline of approximately 1.8%–2.3%, oscillating repeatedly within the $66,000–$69,000 range. 21. Intel announced it will repurchase a 49% stake in its Ireland-based Fab 34 factory from Apollo Global Management for $14.2 billion, financing the transaction through its cash reserves and issuance of $6.5 billion in new debt. 22. Microsoft closed up 1.11%; NVIDIA rose 0.93%; Apple gained 0.11%; Meta declined 0.82%; Google fell 0.54%; Amazon dropped 0.38%. 23. Tesla closed down 5.42%; its global vehicle deliveries in Q1 totaled 358,023 units—the weakest quarterly sales performance in years and below Wall Street expectations. 24. Intel rose 4.7%; DoorDash gained 3.8%; AMD and Netflix each rose over 3%, leading gains in the Nasdaq-100 Index. 25. Toyota achieved one of its strongest annual sales performances ever in the U.S. market in 2025, and opened 2026 with solid momentum—outperforming major rivals including Ford and General Motors. 26. BMW Japan announced that Kinjiro Ueno, former President of Mercedes-Benz Japan, has officially joined BMW Japan as President and Representative Director. 27. The first jointly developed vehicle between Volkswagen and XPeng—the ZHONG 08—entered mass production on March 13, 2026, just 24 months after the two parties signed their technical cooperation agreement in March 2024—setting a new record for Volkswagen’s fastest vehicle development cycle in China. 28. JD.com’s acquisition of an Austrian delivery service faces new hurdles due to complications in Austria’s foreign investment review process, potentially delaying completion beyond the originally planned first half of 2026. 29. Spain’s Banco Santander entered the regulatory review phase for its $12 billion bid to acquire Webster Bank. 30. Ecolab Group’s acquisition of CoolIT Systems is expected to close in Q3 2026, doubling the potential market size for data center cooling to $10 billion. 31. The United States will maintain a 50% tariff on imported steel, aluminum, and copper commodities, assessed on the total value paid by U.S. buyers. 32. The U.S. will impose a 100% tariff on imported patented pharmaceuticals from countries without free trade agreements or Most-Favored-Nation (MFN) pricing agreements; active pharmaceutical ingredients are subject to the same tariff. 33. German confectionery group Katjes International released its 2025 annual report: revenue grew from €392.6 million to €503 million; the group forecasts 2026 revenue exceeding €650 million. 34. The FAO Food Price Index averaged 128.5 points in March, up 2.4% from the revised February level—marking the second consecutive month of sequential growth. 35. The Cereal Price Index averaged 110.4 points in March; Middle East conflict-driven energy price increases have raised agricultural production and transportation costs.

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