Overseas buyers, R&D and quality engineers often need one place that maps air-cooling and liquid-cooling plastic parts for AI / high-density server racks to the drawings, articles and component pages already on this site. This page is that map. It summarizes what Suzhou Dongying Electronic Technology Co., Ltd. publishes today, with internal links you can open and verify. It does not add capacity claims, lead times or performance guarantees.
Liquid-cooling parts: we can evaluate drawings and requirements for molding. Suitability always depends on your fluid, wetted-material list and your own system qualification. Nothing here is a claim of proven liquid-cooling production capability. Product-gallery tiles such as “liquid-cooling valves & connectors” or “locking clips” are not presented here as a production series; for a documented liquid-cooling component page, use only the cold-plate fluid connectors link below, together with the evaluation article.
Contact: Prepare a project brief · suzhoudongying@gmail.com
What this category covers
| Sub-area | Typical plastic parts (as discussed on this site) | How we engage |
|---|---|---|
| Air cooling — rotating | Fan / server cooling impellers | Mold + injection molding review from drawing |
| Air cooling — structure | Fan frames / housings, bases and supports | Mold + molding; inserts reviewed when specified |
| Liquid cooling — wetted / near-loop | Cold-plate fluid connectors (documented component); other loop plastics only as topics in the evaluation article | Evaluate only, from drawing + fluid data |
| Shared | Material grade, critical features, inspection and sample approval | Agreed per project |
Company framing on the homepage: precision molds, injection molding and insert molding for components that include “electronics cooling parts,” alongside gears, busbar insulation parts and bearing cages.
Liquid cooling (evaluate only)
Guide: what to check before tooling
Plastic Parts for AI Liquid Cooling: What to Evaluate Before Tooling The article states that Dongying is a mold maker and injection molder in Suzhou, and that for liquid-cooling projects “we review drawings and requirements to see whether a part can be evaluated for molding,” using cold-plate fluid connectors as an example. It also states that nothing in the article is a performance claim for any part.
Content the article walks through (for your RFQ preparation):
- Separating wetted parts (connectors, fittings, some quick-connect internals) from dry parts (covers, brackets, guides, housings).
- Starting from the system wetted-material list and fluid / temperature data (including external OCP guidance cited there—not a Dongying certification).
- Why datasheet “strength” alone is not enough for long coolant exposure.
- Sealing faces, threads, inserts and leak paths.
- A molder’s evaluation ending in risks and open items—not a promise.
- RFQ inputs: 3D + drawing revision, fluid and inhibitor package, max fluid temperature, approved grades / wetted list, pressure and leak-test method, flame needs for dry parts near electronics, volume and mold-delivery preference.
Documented component: cold-plate fluid connectors
Cold-plate fluid connectors Documented as tubular connection parts for cold-plate assemblies; mating interfaces are reviewed against the assembly design. The page states that tolerances, materials and acceptance criteria are reviewed against your drawings, and asks for drawing revision, material requirements, quantities and critical inspection points (plus insert-supply responsibility if metal inserts apply).
No other liquid-cooling component pages are linked from this category landing. Other loop geometries can be sent for evaluation with the RFQ pack below.
Air cooling — frames, impellers and bases
Server fan frame mold (buyer checklist)
Server Fan Frame Mold: What Buyers Should Define Before Tooling Explains that a server fan frame must be stiff, flat and round enough to carry the motor, set impeller tip gap and bolt into the chassis. Topics include frame function (bearing tube / hub seat, struts, venturi, mounts, wire features), material discussion (glass-filled PBT, PA66 and PPS as usual choices in that article), molding-in a bearing tube, weld lines / flatness, tip clearance and RFQ content. The article identifies Dongying as building molds and molded parts for electronics cooling, including frames/housings, impellers and fan bases.
Impeller injection molding (buyer checklist)
Cooling Fan Impeller Injection Molding: What Buyers Should Define Before Tooling States that impeller tooling works best when four items are agreed before steel is cut: material, gate layout, cooling design, and how balance will be measured. Related material comparison: Fan impeller materials — PBT vs PA66-GF vs LCP.
Micro cooling impeller (family entry)
Micro cooling impeller Uses a photographed micro impeller as a starting point for similar-component discussion: blade and hub geometry, assembly interfaces, material, tooling and any requested validation. Inputs listed: drawing/3D, material requirements, critical dimensions/fit, and target operating conditions so validation responsibilities can be defined.
Server cooling impeller (documented example)
Server cooling impellers Describes a small server cooling-fan impeller with a compact hub and surrounding blades. Specifications on that page are catalog/example values for a documented part—not a general capability table. Bring your own drawing, material and inspection criteria for a review.
Cooling fan frames and housings
Cooling fan frames & housings Structural frames and housings for motor-cooling and server fans, with mounting features and fan-assembly interfaces. Catalog examples on the page vary by part and version; project acceptance follows your drawing.
Cooling bases and supports
Cooling bases and supports Starts from mounting interfaces and base/support geometry (ribs, locating surfaces, related interfaces). Review focus includes molded base, inserts, metal elements and assembly steps as separate responsibilities. Linked component examples include notebook/computer fan bases, frames/housings and metal covers.
How projects are usually scoped on this site
Aligned with manufacturing and resource pages:
- Drawing revision + 3D and assembly context (drawings and revisions).
- Tooling vs part supply vs both, and whether the mold stays with Dongying or is delivered elsewhere (tooling and supply scope).
- Inserts (bearing tubes, metal clips, conductors, etc.): drawing, position, supply ownership (insert molding inputs).
- Inspection and sample approval tied to the same revision (inspection and approval, quality).
Precision mold discussion for cooling-related geometries also sits under Precision molds and Injection / insert molding.
Suggested RFQ pack for AI server cooling plastics
Send what you can without uploading confidential files in the web form; discuss confidentiality first if needed (contact).
Air-cooling parts
- 2D + 3D with revision; datums; mounting and tip-clearance / balance-related features marked.
- Resin grade (or application constraints to evaluate).
- Any metal inserts (e.g. bearing tube) and who supplies them.
- Sample quantity, expected volume, preferred mold location (Dongying part supply vs mold delivery).
- Inspection / balance / flatness methods you require—as your criteria, not as implied Dongying guarantees.
Liquid-cooling parts (evaluation)
- Everything above, plus fluid type and inhibitor package, maximum fluid temperature, wetted-material list or approved grades, operating/test pressure, leak-test method.
- Explicit note that you are requesting an evaluation for molding feasibility.