Product-specific sourcing · China
Electronic Enclosure OEM Sourcing in China
Compare China electronic enclosure OEM suppliers by material (ABS/PC/aluminum/steel), process (injection, CNC, extrusion, die-cast, sheet metal), dimensions and tolerances, IP/EMI sealing claims, machining, finish, branding, MOQ/NRE tooling, samples and drawing package — buyer-side RFQ fields for empty or custom housings, not factory marketing.
Buyer context
Make the technical and commercial basis comparable first.
Enclosure quotations often look similar until material, process route, drawing package, IP/EMI claims, secondary machining, finish/branding and tooling/MOQ layers are written down. Stock-modify versus custom tooling should be compared on the same brief. Sephalis helps buyers make those fields explicit so quotations stay comparable, and keeps supplier statements separate from IP testing, EMI validation or market-access approval. Sephalis does not manufacture electronic enclosures and does not certify IP, EMI, RoHS or enclosure-type marks. Use this page for empty or custom electronic housings; for phone cases and model-specific soft goods use /electronics-sourcing-china/phone-accessories; when the RFQ is a full power-bank pack (cells/BMS/Wh) keep it on /electronics-sourcing-china/power-banks; when the RFQ is the electrical charger or PSU (housing only as a customisation field) use /electronics-sourcing-china/wall-chargers or /electronics-sourcing-china/power-adapters.
What buyers usually need to compare
Use these fields to keep quotations tied to the same technical, production and packaging assumptions.
✓ Overall dimensions (L×W×H), wall-thickness envelope and critical tolerances from the buyer drawing or target envelope
✓ Material family and grade preference (ABS / PC / PC-ABS; aluminum 6061 CNC, 6063 extrusion, ADC12/A380 die-cast; steel / stainless / galvanized sheet) — or open for supplier DFM with assumptions stated
✓ Process route (stock modify · injection mould · CNC from billet · extrusion + end caps · die-cast + secondary CNC · sheet metal laser/punch/bend/weld) and why that route fits volume and geometry
✓ Internal features: wall thickness, PCB mounting bosses, mating flatness and gasket-groove assumptions
✓ Ingress / sealing target (IP or NEMA-type claim) as an RFQ field — not a Sephalis guarantee
✓ EMI / shielding requirement if any (conductive gasket, grounding lug, conductive finish) and who states performance
✓ Cut-outs, threads, secondary CNC, heat-sink features and hardware assembly scope
✓ Gasket / O-ring material (silicone, EPDM or other) and cable-gland or connector sealing assumptions when sealing is in scope
✓ Surface finish and colour (anodize, powder coat, paint, sandblast, polish, texture) and cosmetic-zone expectations
✓ Private-label branding on the enclosure (silk, laser, label) and packaging if branding is in scope
✓ OEM / customisation tier (catalogue stock · light machine · new mold/die · full custom ID)
✓ MOQ by process route and by customisation layer; sample / prototype cost and sample lead time
✓ NRE / tooling (injection mold, extrusion die, die-cast tool), tooling ownership wording, production lead time and quantity breakpoints
✓ Documents to request with the quotation (material cert/RoHS claim, IP/EMI test claim if offered, finish sample note, FAI plan)
Evidence worth collecting before the next decision
Sephalis keeps supplier statements, technical evidence and unresolved questions separate so the buyer can see what is known and what still needs engineering or specialist review.
✓ Buyer 2D + 3D drawing package (STEP/IGES/X_T plus revision-controlled 2D PDF with tolerances/CTQs) or agreed stock model + modify note — buyer-verified once revision locked
✓ Written material grade and process route on the quotation (commercial / agreed basis)
✓ Finish / colour sample or standard chip reference (supplier-provided)
✓ Supplier IP / sealing statement or test-report copy where offered (supplier claim / document — not Sephalis certification)
✓ Supplier EMI / shielding statement where claimed (supplier claim)
✓ Written sample / first-article terms and production lead time (commercial)
✓ Quotation with MOQ, NRE/tooling, tooling ownership and exclusions (commercial)
✓ Supplier-provided material declaration / RoHS / QMS copies where offered (supplier claim / document — not Sephalis certification or market approval)
✓ Unresolved items called out as unknown until buyer or specialist closes them (report-to-model match for IP tests, measured sealing/EMI vs claim, die-cast porosity/leak risk, tooling ownership wording)
Commercial comparison
Separate one-time development cost from recurring unit cost.
For electronics, tooling, NRE, programming, test fixtures, artwork and prototype charges may sit outside the production unit price. A useful comparison keeps those charges visible together with MOQ, lead time, packaging and FOB terms.
Technical boundary
Supplier documents are evidence, not automatic approval.
Sephalis can collect specifications, quotations, supplier documents and samples. Formal electrical safety, radio, battery transport, engineering validation, product compliance and market-access decisions remain separate questions for the relevant specialists and authorities.
Common buyer questions
Short answers below describe the sourcing workflow rather than engineering or regulatory approval.
When should I use electronic-enclosures vs phone-accessories, power-banks, wall-chargers or power-adapters?
Use /electronics-sourcing-china/electronic-enclosures for empty or custom electronic housings (material, process route, IP/EMI claims, machining, finish, branding, MOQ/NRE and drawing package). Use /electronics-sourcing-china/silicone-rubber-keypads for molded silicone elastomer keypads and rubber buttons (not an empty box; silicone foam gasket remains an enclosure sealing field only — not a silicone-foam product leaf). Use /electronics-sourcing-china/phone-accessories for phone cases and model-specific soft or hard phone covers. Use /electronics-sourcing-china/membrane-switches for membrane keypad/overlay HMI panels (not the empty box). If the RFQ is a full power-bank pack (cells, BMS, Wh) with housing only as a pack feature, keep it on /electronics-sourcing-china/power-banks. If the RFQ is a discrete heatsink part (extruded, skived, bonded-fin, CNC or forged aluminum/copper metal sink), use /electronics-sourcing-china/heatsinks; keep this page when the part is the housing, including integrated heat-sink features or fins cast/extruded into the box. If the RFQ is a purchased discrete DC cooling fan or blower SKU, use /electronics-sourcing-china/cooling-fans; keep this page when the part is the housing (including fan cut-outs, grills, or optional fan-kit assembly claims). If the RFQ is the electrical wall charger or AC/DC adapter and housing/colour is only a customisation field, use /electronics-sourcing-china/wall-chargers or /electronics-sourcing-china/power-adapters instead of splitting a half-finished device RFQ onto this page.
Does Sephalis manufacture or certify electronic enclosures?
No. Sephalis is a buyer-side sourcing and supplier-research service. It helps compare enclosure manufacturers and collect drawings, quotations, samples and supplier documents. Manufacturing capability claims and any certificates remain with the supplier; formal IP testing, EMI chamber validation, enclosure-type marking or market-access approval stays with the relevant specialists.
How should IP ratings and certified enclosure claims be treated?
Put the target IP or NEMA-type requirement in the RFQ and request matching drawings (gasket groove), gasket material and any test report for the exact configuration quoted. Treat IP, EMI, RoHS and enclosure-type PDFs as supplier claims or documents to review — not automatic market access or a Sephalis guarantee. If report-to-model match or independent lab status is unclear, mark that item unknown until the buyer or a specialist closes it.
How should MOQ, NRE and tooling be compared across process routes?
Ask suppliers to separate stock-modify versus new mold, die or extrusion tooling; split unit price from NRE; state tooling ownership in writing; and split sample cost and sample lead time from production MOQ. A MOQ-1 CNC or stock-modify claim is not comparable to an injection or die-cast quote until tooling, ownership and production minimums are written down.
How do I keep material and process quotes comparable?
Name the preferred material family and acceptable process routes (or ask for a recommended route with assumptions stated on the quotation). Two quotes on different processes — for example CNC billet versus die-cast, or stock-modify versus new injection tooling — are not price-comparable until material, process route and drawing revision appear on the same brief.
What drawing package should go in the enclosure RFQ?
Prefer a revision-controlled 3D file (STEP, IGES or X_T) plus a 2D PDF with critical tolerances, finish notes and CTQs. If only a sketch or PCB outline exists, say so and ask suppliers to state assumptions in writing. Sephalis can help collect and compare drawing-tied quotations; it does not replace the buyer's mechanical sign-off.
Need a wider electronics supplier search?
Browse the full cluster for consumer electronics, accessories, chargers, PCB assembly, low-MOQ manufacturing, OEM/ODM, private label, second sourcing and supplier verification.
Browse Electronics Sourcing in China →