Form changes the electronics.
Wearing position, enclosure geometry and contact surfaces influence board layout, component placement and the space available for power and connectivity.
Product Development / ODM & OEM
Definition / Prototype / Validation / TransferWearable product engineering
From the brief
to the bench.
Hulin brings product definition, structure, electronics, firmware and connected software into one development brief. The engineering scope and partner responsibilities are agreed around what the product needs to become.
Start a Project01 / Define
Start with the right questions.
A new concept, existing electronics or a product ready for its next iteration. Agree use cases, system architecture, design responsibility and the evidence needed next.
02 / Prototype
Put the decisions
into physical form.
Prototypes make relationships testable: where parts fit, how the electronics behave, and how the connected experience comes together.
Behavior changes the power budget.
Sensing, recording, display activity, wireless transfers and background processing need to be considered together, rather than optimized in isolation.
Interfaces define the whole product.
Device states, firmware behavior, mobile interactions and backend services need clear boundaries so each team is building toward the same experience.
03 / Validate
Evidence before
the next decision.
Validation is planned around the product’s risks and intended use. The review has to connect physical samples, firmware versions and the behavior being evaluated.
- EVT
- Engineering validation: evaluate functions and integration on development hardware.
- DVT
- Design validation: review the design against the agreed product and use requirements.
- PVT
- Production validation: coordinate production-readiness activities with the manufacturing partner.
Stages, test scope and acceptance criteria are agreed per project. The photograph is a testing-equipment reference, not evidence of completed validation.
04 / Transfer
The design travels
with its decisions.
What is delivered, which version moves forward and who supports the next step belong in the same conversation.
- Product definition
- Requirements, architecture and the decisions that define the product.
- Engineering package
- Agreed mechanical, hardware and firmware deliverables, with clear version boundaries.
- Connected experience
- Application interfaces, device behavior and service integration within the agreed scope.
- Partner coordination
- Industrial design, manufacturing and supply-chain coordination where the project calls for it.
Hulin engineering
Product definition, structure, hardware, PCBA, firmware and connected software within the agreed scope.
Partner coordination
Industrial design, manufacturing and supply-chain activities may involve partners. Production and handover responsibilities are defined with the project.
Define ODM / OEM cooperation through reviewable deliverables
Product development and manufacturing coordination need a clear scope, acceptance method and responsible team. These are possible project gates, not a promise that every project follows identical builds or timelines.
- EVT: engineering feasibility
- Confirm architecture and key interfaces. Use prototypes to check board functions, firmware states and sensing or audio paths, and record unresolved technical risks.
- DVT: design validation
- Review product functions, power, connectivity and mechanical integration under agreed conditions. Maintain an issue list and version boundaries; reliability and compliance tests depend on the product requirements.
- PVT: production process validation
- Agree assembly, programming, test and traceability methods with manufacturing partners, including the documentation and issue-feedback process for a pilot build.
- MP: production handoff and support
- Identify approved versions, engineering files, firmware and test information, with responsibilities for changes, escalation and production support. Volumes, timing and acceptance terms are agreed separately.
Share the development stage, existing files, intended use, target market and your team’s responsibilities. Scope can span product definition, mechanical integration, PCBA, embedded firmware and app integration; deliverables, source/IP terms and manufacturing responsibilities belong in the project agreement.
Explore the engineering decisions
Let’s build what comes next
Your next wearable. Together.
Tell us what you’re developing and where you need engineering support.
Submit your project details securely to Hulin. You can also keep a copy of your brief.
Prefer to email directly?allen.yue@szhulin.com
Your brief is ready
Review your brief, then open an email draft. Nothing is sent until you send it from your email app.