Receipt and fit check
After the server confirms receipt, a standard-scope inquiry is reviewed for service fit within 48 working hours.
One agreed scope for design and manufacturing handoff
Industrial Design & Mechanical Engineering for Electronic Products
Start with an idea, electronics package, mechanical CAD or an existing product. We define the right paid engineering stage, coordinate the disciplines and keep one commercial owner accountable for the agreed scope.
The customer supplied the concept, style direction and reference sample. We handled subsequent design, feedback iterations, prototypes, validation, tooling and production.
Initial fit review48 working hours for standard projects
Secure intakeNDA-first for confidential files; non-confidential brief always accepted
Source filesEditable native files plus STEP/STP and agreed exchange formats
Manufacturing freedomReceive the full package and choose another manufacturer if needed
Choose your starting point
Begin with what you already have
Choose the closest starting point. The selection carries into the design inquiry and can be changed before submission.
01Idea or referenceConcept, intended user, visual direction, sketches or reference samples.
02PCB or electronicsSchematic, PCB, modules or defined electronic functions needing product integration.
03Mechanical CADExisting Creo, NX, STEP/STP or other CAD that needs completion or validation.
04Existing productRedesign, cost-down, reliability improvement, feature update or manufacturing transfer.
Before you send
What happens after you submit
Start with a non-confidential brief. We use it to confirm fit, identify missing inputs and define the right commercial next step before asking for sensitive project files.
Missing inputs and risk route
We identify the non-confidential information needed for a useful review. If sensitive files are required, request an NDA before sharing them.
Commercial next step
We respond with a no-fit explanation or referral, a paid feasibility sprint, or a bounded scope-of-work and stage proposal.
Scope boundary: the initial fit review is not free detailed engineering and is not a formal quotation. Price and schedule are confirmed only after scope, inputs, assumptions and acceptance criteria are defined.
Quotable service packages
Five scopes that can be quoted and accepted clearly
Each proposal defines inputs, outputs, included rounds, schedule, approval gates, acceptance criteria and exclusions. Unclear projects begin with a paid feasibility sprint, not an open-ended design promise.
Product definition & feasibility
Turn concept into a controlled brief, architecture and commercial-ready development plan.
- Requirement and risk review with missing-input list
- Product architecture and discipline ownership map
- Feasibility matrix, assumptions and next-stage quotation
Industrial design
Create a coherent exterior direction tied to user, brand, controls and manufacturing constraints.
- 2 to 3 initial visual concepts
- 2 consolidated revision rounds then one final freeze
- Appearance CAD, CMF record and review-ready presentation output
Mechanical engineering
Develop manufacturable structure, assembly, sealing, thermal paths and product interfaces.
- Creo / Pro E and Siemens NX / UG native source + STEP/STP
- 2 pre-prototype engineering rounds
- One accountable correction cycle after initial prototype review
Electronics, firmware & app
Connect the product architecture to schematic, PCB layout, embedded software and app requirements.
- Schematic and PCB layout to board-level constraints
- Firmware/App scope and bring-up when included in SOW
- Hardware-software interface and verification records
Prototype to production
Carry the approved design through samples, validation, tooling, certification coordination, packaging and production release.
- Appearance, structural, electronic, EVT, DVT and PVT samples as needed
- Thermal / strength / waterproof / moldflow assessment by project method
- Tooling, pilot stabilization, packaging design and handoff package
Controlled development process
Decisions are frozen in stages, not left ambiguous
Each gate records the approver, version and unresolved items. Customer-requested changes after an approved gate are handled through a written Change Request with schedule and cost impact.
- Gate 01Requirements freezePM + PMO; version baseline, inputs, constraints and acceptance plan.
- Gate 02ID freezeDesign lead; selected shape, controls, CMF and final visual direction.
- Gate 03MD / Architecture freezeMechanical interfaces, interfaces to PCB, thermal path and assembly baseline.
- Gate 04Firmware & App freezeEE/FW owner and mobile interface scope confirmed for integration.
- Gate 05Prototype acceptanceEVT/DVT sample checks and open issues closed for go/no-go.
- Gate 06Tooling and certification releaseTooling trial plan, process capability and pre-compliance status agreed.
- Gate 07Manufacturing releaseManufacturing package, version traceability and production approval prepared.
Revision policy: we work toward documented acceptance criteria and respond to consolidated customer feedback within the included rounds. “Unlimited revisions until satisfied” is not used because it creates unclear responsibility, schedule and acceptance.
Commercial model and risk boundary
Deliverables and acceptance criteria
Prime contractor with controlled specialists
We are the single accountable signatory for the approved scope, timeline and final handoff. Controlled partners can execute specialised analysis, molds, tests or manufacturing support, but PCBA PARTNER remains commercially accountable.
- One RFQ scope, one project owner, one reporting rhythm.
- Changes after gate freeze require written change request and impact update.
- No silent transfer of project accountability to vendors.
Security-first transfer path
Confidential files are only exchanged after NDA completion. Before NDA, we only accept non-confidential summaries and reference inputs. After NDA, files are shared in controlled links with access time limits, upload records and retention policy.
- Supported formats: PDF, JPG/PNG, STEP/STP, STL, DXF, ODB++, Gerber (within platform limits).
- Supported size: 30 MB per submission in on-page form; larger files are moved to secure transfer.
- Access is role-based; backups and retention are scheduled after close.
Team capacity commitment
We can run up to 5 concurrent full design programs while preserving response quality. For standard projects, initial fit review is normally delivered within 48 working hours.
- Average cycles include 2–3 consolidated design review rounds.
- Complex projects get priority routing and formal review schedule inside 48 hours.
- IP and transfer rights are assigned by paid scope and contract milestones.
Deliverables and ownership
Files that remain usable after the project
Design sources
- Editable native CAD in the agreed software/version
- STEP/STP and agreed exchange formats
- Drawings, BOM and approved visual/CMF records
Electronics & software
- Schematic and PCB source/release files in scope
- Firmware or app source and build notes in scope
- Programming, test and release documentation
Manufacturing package
- Released drawings, BOM and assembly information
- Tooling and approved sample records in scope
- Transferable package for another manufacturer
IP transfer after full payment
The contracted project IP and deliverables transfer after full payment under the SOW and IP schedule. Pre-existing know-how and properly licensed third-party assets remain subject to their stated terms.
Scope and non-inclusion policy
We handle design, prototype, validation, tooling, certification coordination and manufacturing handoff inside the signed scope. Third-party certification outcomes, specialized test lab liabilities, unrelated software/platform services and late scope expansion follow written add-on scope and acceptance.
Prototype strategy
Choose the sample that answers the next risk
Appearance & ergonomics
SLA, CNC PU/ABS or equivalent presentation samples for scale, grip, controls and visual review.
Structural fit
FDM, SLS, MJF, CNC, sheet metal or vacuum casting for assembly, clearance and fastening checks.
Electronics proof
Development boards, quick-turn PCB and SMT build for architecture, interface and bring-up risk.
EVT integrated sample
Combined electronics and mechanical sample to close core engineering functions and interfaces.
DVT / PVT
Production-intent samples, tooling and process validation against the agreed verification plan.
Packaging sample
Structure, protection, labeling and shipment presentation before production packing release.
Public project evidence
Three products developed from customer direction to production
For each project, the customer supplied the initial concept, desired style and reference sample. PCBA PARTNER handled the subsequent development, customer-feedback iterations, prototype, validation, tooling and production.
Power electronics
High-power power bank
Industrial design, internal packaging and full product integration around batteries, PCB, display, connectors and enclosure.
- Starting point
- Concept, style direction and reference sample
- Our scope
- Design, iteration, prototype, validation, tooling and production
- Evidence
- Assembled product, internal layout and exploded structure
The exploded view shows how the enclosure, cells, PCB and display fit together.
Inspect the project drawing →
Consumer product
Ergonomic can opener
Human-centered exterior surfacing, control placement, housing split and mechanical development for manufacturable assembly.
- Starting point
- Concept, style direction and reference sample
- Our scope
- Design, iteration, prototype, validation, tooling and production
- Evidence
- Top and side CAD development views
The CAD view shows the housing surfaces, control area and housing split.
Inspect the project drawing →
Automotive product
Automotive refrigerator
Multi-layer enclosure and thermal-system packaging across liners, frames, heat-transfer parts, fans, PCB and final assembly.
- Starting point
- Concept, style direction and reference sample
- Our scope
- Design, iteration, prototype, validation, tooling and production
- Evidence
- CAD and rendered system exploded views
The exploded view shows the enclosure, frame, fans, thermal components and electronics layout.
Inspect the project drawing →The drawings document design and assembly work. Published material does not include performance test results, production quantities or customer acceptance records.
Buyer questions
Design & engineering FAQ
Can you start with only an idea or reference sample?
Yes. A fit review identifies the right stage and boundary. Projects without stable requirements begin with a paid feasibility sprint rather than open-ended output.
Which mechanical software and formats do you support?
PTC Creo / Pro E and Siemens NX / UG are primary. Deliverables can include agreed native source files plus STEP/STP and required exchange formats.
Do you also handle electronics, firmware and app?
Yes, when included in SOW. That includes schematic and PCB, firmware bring-up, and application integration with defined acceptance.
Can you do thermal, strength, waterproof and moldflow work?
Yes. We separate simulation, engineering review, physical validation and certification support. Evidence is shown only after agreed test results and method are complete.
Who owns prototypes and specialist suppliers?
PCBA PARTNER remains the accountable prime for accepted scope. Specialist teams can execute targeted tasks, but project accountability and version control remain with PCBA PARTNER.
Can we transfer the package to another manufacturer?
Yes. After full payment and under the IP schedule, we transfer the agreed package and allow customer manufacturing choice.
How many design programs can you run simultaneously?
We keep at most 5 full design programs concurrent in stable review control, adjusted by complexity and specialist load. This protects response quality and fit-review windows.
How is IP transferred?
Project IP and agreed deliverables transfer after full payment and milestone acceptance. Existing company templates, approved third-party licenses and non-transferrable licenses stay outside customer assignment unless contract says otherwise.
Start with a non-confidential product brief
Tell us your starting point, target product, primary scope and production intent. Standard inquiries receive an initial fit review within 48 working hours; complex programs receive a formal review plan within that period.
PCBA PARTNER is operated by Dongguan Hepin Electronic Technology Co., Ltd.
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