Designing Tomorrow’s Products Faster and More Efficiently

Sunstrong provides user-centered design and engineering expertise, enabling customers to specify, conceptualize, develop, test, and sustain today’s products and tomorrow’s breakthroughs. We offer a comprehensive range of design, engineering, and systems integration services tailored to your industry and market needs.

Comprehensive Engineering Capabilities

We collaborate closely with our customers to take products from concept to volume production and go-to-market in a rapid, cost-effective, and low-risk manner. Our services cover a broad range of technical competencies:

  • System architecture
  • User interface and industrial design
  • Cross-industry technologies
  • Hardware design
  • Software design

From early-stage research and concept validation to validated reference designs, rapid prototyping, advanced engineering, and testing — we help you overcome design and manufacturing hurdles efficiently.

Validated Reference Designs

Why start from scratch? Customize any of our high-quality reference designs to jumpstart your product development.

You’ll cut major costs and scale your manufacturing faster.

Manufacturing Hurdles: “Unsticking” Challenges in Product Design and Engineering

From research and design through commercialization — we help you navigate complexity and accelerate time-to-market.

Engineering team working on product design

Blog: Manufacturing hurdles — “unsticking” challenges in product design and engineering

Video: From research and design through commercialization

Complete Manufacturing Solutions

From precision PCB assembly to full box build and rigorous testing, we deliver end-to-end EMS solutions with precision, speed, and scalability to meet your production goals.

Box Build Assembly

End-to-end product integration — from sub-assemblies and PCBs to complete, tested, packaged systems ready for global distribution.

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PCB Assembly

High-mix, low-to-high volume SMT, THT, press-fit with advanced inspection (AOI, X-Ray) and IPC Class 3 compliance.

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Metal Fabrications

Precision sheet metal cutting, bending, welding, powder coating and precision sheet metal for durable enclosures and frames.

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Plastic Moulding

High-precision injection, double-shot, insert and over-moulding for complex plastic parts with cosmetic and functional requirements.

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Cable & Wire Harness Assembly

Complex harnesses, overmolded cables, ultrasonic welding and labeling for automotive, industrial and medical applications.

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Testing & Quality Control

ICT, FCT, boundary scan, environmental stress screening, reliability testing and full traceability systems for zero-defect delivery.

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Our Production Process

A structured, transparent five-step process from enquiry to delivery — designed to reduce risk and maximize quality at every stage.

1

Enquiry & DFM Review

Submit your BOM and Gerbers. Our engineers perform Design for Manufacturability analysis and provide a detailed quote.

2

NPI & Prototyping

First article inspection and prototype builds validate your design before committing to full production volumes.

3

Production & Assembly

Full-scale SMT, through-hole, box build and harness assembly on automated lines with real-time quality monitoring.

4

Testing & Inspection

AOI, X-Ray, ICT, and functional testing with complete traceability records to guarantee every unit passes specification.

5

Delivery & Aftercare

Secure packaging, on-time worldwide shipping, and post-delivery support to ensure a smooth product launch.

Quality Built Into Every Step

Our quality management system is embedded in every process — from incoming material inspection to final shipment — ensuring consistent, traceable, and defect-free output.

  • Automated Optical Inspection (AOI) 100% board inspection on every production run to catch solder defects, missing or misaligned components.
  • X-Ray Inspection BGA and hidden-joint verification to detect voids, cold joints and bridging not visible to the naked eye.
  • In-Circuit & Functional Testing Electrical and functional verification confirms every board performs to specification before shipment.
  • Full Traceability Component lot traceability and production records are retained for every assembly, giving you complete visibility.
ISO 9001
Quality Management
ISO 9001:2015 certified quality management system across all production sites.
ISO 13485
Medical Devices
Certified for design and manufacture of medical device electronics and assemblies.
IPC-A-610
Acceptability of PCBAs
Class 2 & 3 IPC-A-610 certified inspectors ensuring assembly quality and workmanship.
RoHS / REACH
Environmental Compliance
Full compliance with EU RoHS and REACH regulations for hazardous substance control.
UL Listed
Safety Certification
UL recognition for safety-critical assemblies used in North American markets.
CE Mark
European Conformity
Products manufactured to meet CE marking requirements for European market access.
Client Testimonials

Trusted by Global Leaders

Our customers choose us for quality, reliability and service. Here's what they say about working with Sunstrong.

"Sunstrong delivered our 50,000-unit PCB assembly run on time with zero defects. Their DFM support during NPI saved us two weeks of rework. Exceptional partner."

JR
James Robertson
VP Operations · MedTech Solutions, USA

"We moved our entire box-build program to Sunstrong three years ago. Lead times dropped 30%, scrap rate is under 0.1%. Highly recommend for complex electromechanical assemblies."

SM
Sophie Müller
Head of Supply Chain · IndustrialX, Germany

"Their IPC Class 3 capability and traceability system gave our aerospace program the confidence it needed. Certified, responsive, and extremely professional."

TK
Takashi Kimura
Quality Director · AeroSpec, Japan

"The cable & wire harness work was complex — over 400 variants. Sunstrong managed the BOM, handled revision control, and shipped on schedule every quarter. Outstanding."

AL
Andrea Liu
Engineering Manager · AutoDrive, Taiwan

"From prototype to mass production in 8 weeks. Their NPI team flagged three design issues before first article, which saved us significantly. True manufacturing partner."

RC
Ryan Chen
CTO · SmartGrid Systems, Singapore

"Metal fabrication quality is consistent run after run. Tolerances are held tightly and finish quality meets our branding standards. We've been with Sunstrong for 7 years."

PV
Pierre Vidal
Procurement Lead · EuroPanel, France
Trusted by Companies Across 20+ Countries
MedTech
IndustrialX
AeroSpec
AutoDrive
SmartGrid
EuroPanel
PowerNet
SolarTech
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Sunstrong 共创未来

无论您需要 JDM 联合设计、ODM 代工还是 EMS 制造服务,我们拥有完整的能力与全球团队,随时准备与您携手前行