Explore our diverse portfolio of high-precision PCBA and manufacturing services tailored for global industries.
Shenzhen STHL is a high-quality provider of electronics manufacturing services (EMS) in China. We serve customers worldwide along the whole industry chain including PCB layout, components sourcing, PCB fabrication, PCBA assembly, cable assembly, box build assembly and comprehensive testing services.
Established in 2006, STHL has accumulated 20 years of experience in electronics contract assembly manufacturing. Our state-of-the-art 10,000 sqm facilities house 7 SMT assembly lines, 2 DIP/THT lines, 2 function testing lines, and 2 finished device assembly lines, allowing us to seamlessly transition projects from rapid prototyping to high-volume production.
As an IATF16949, ISO9001, ISO14001, and ISO13485 certified electronics assembly manufacturer, we produce products that comply strictly with RoHS standards. Our engineering capabilities span materials analysis, advanced reliability testing (AOI, X-RAY, ICT, and functional testing), and highly effective SMT/THT assembly, making us a trusted long-term partner for global clients.
From ultra-fine pitch surface mount technologies to robust through-hole insertions, we deliver flawless execution.
Our surface mount technology (SMT) lines are equipped to handle the industry's most complex and miniature components with micro-level placement accuracy. We specialize in:
For applications requiring high mechanical strength and thermal durability, STHL provides robust THT assembly services, including:
End-to-end solutions designed to accelerate your time-to-market while maintaining the highest quality standards.
STHL operates 7 automated PCB assembly lines for both prototype and mass production. Advanced SMT ensures precise component placement and quality. Skilled technicians provide efficient THT assembly and RoHS-compliant lead-free soldering.
STHL PCB fabrication service produces high-quality, reliable printed circuit boards from simple singles to complex multi-layers, from flex PCB to rigid-flex PCB, we use premium materials and controlled processes to meet precise specifications.
STHL offers global electronic component sourcing and supply chain solutions. Our vast supplier network and expertise ensure access to genuine, certified parts, mitigating risks of counterfeits, allocation, and long lead times to secure your production schedule.
With the precision manufacturing of cable assembly components including handles, retention systems, connectors, and shielding in a wide range of materials and finishes, we have performed many successful cable assemblies for many customers from various industrial applications.
Making your projects at STHL from SMT assembly to box build assembly is very cost-effective and fast to market. Covering everything from putting a PCBA into the enclosure with all functions testing to a complete product assembly packaged and ready for delivery to your customers, we can supply the full support.
STHL conducts functional testing (FCT) to verify product performance, preventing defects such as circuit issues, missing or incorrect components. This ensures delivered products are stable and fully qualified.
How flexible printed circuits are revolutionizing design constraints across critical global and regional industries.
In medical electronics, space and biocompatibility are paramount. Flex PCB prototyping is widely used in wearable patient monitors, diagnostic imaging systems, and implantable devices. The ability to bend and conform to the human body allows for non-invasive, continuous health monitoring with high signal integrity.
Modern vehicles demand lightweight, vibration-resistant interconnects. Flex PCBs are deployed in Advanced Driver Assistance Systems (ADAS), engine control units, sensor arrays, and curved dashboard displays. Prototyping ensures these circuits withstand extreme thermal cycling and mechanical stress.
Weight reduction is a critical metric in aerospace engineering. Flexible circuits replace bulky wire harnesses in satellites, avionics, and radar systems. Prototyping allows defense contractors to validate signal propagation and electromagnetic interference (EMI) shielding before full-scale deployment.
Anticipating the next wave of flexible electronics technology to keep your designs ahead of the curve.
As devices shrink and demand higher processing power, the technical roadmap for flexible PCBs is shifting toward High-Density Interconnect (HDI) structures. We are actively developing processes to support:
By partnering with a forward-looking manufacturer like STHL, you gain access to cutting-edge materials and fabrication techniques. Our engineering team collaborates with research institutions and material suppliers to ensure our prototyping capabilities match the requirements of tomorrow's hardware startups and enterprise innovators alike.
We continuously invest in state-of-the-art Laser Direct Imaging (LDI) and high-precision vacuum laminators to handle advanced multilayer rigid-flex configurations, ensuring your prototypes are built on a foundation of scalable, production-ready technology.
Leveraging the world's most robust electronics ecosystem in Shenzhen to accelerate your product development.
Located in the heart of China's electronics manufacturing hub, STHL leverages an unparalleled local ecosystem. This geographic advantage translates directly into tangible benefits for our international clients:
Rapid Component Sourcing: Our proximity to major component distributors and direct relationships with original manufacturers allow us to source hard-to-find components in days, not weeks. We mitigate supply chain disruptions by utilizing real-time inventory tracking and alternative part recommendations.
Unmatched Turnaround Times: For Flex PCB prototyping, speed is critical. Our integrated workflow—from design review (DFM) to fabrication and assembly—happens under one roof or within a tight, highly coordinated local network. This enables us to deliver fully assembled prototypes in as little as 5 to 7 working days.
Cost-Effective Scaling: Transitioning from prototype to mass production is seamless. The same engineering team that refines your prototype oversees the transition to our high-speed SMT lines, ensuring no knowledge is lost and production costs are optimized from day one.
Supply chain resilience is not just about speed; it is about reliability. STHL employs strict vendor qualification processes to ensure all raw materials—from the polyimide base film to the solder paste—meet international standards. Our quality management system is audited regularly to maintain compliance with automotive (IATF16949) and medical (ISO13485) standards, giving you peace of mind that your intellectual property and product quality are secure.
We also maintain strategic safety stocks of common passive components and substrate materials, shielding our clients from sudden market fluctuations and allocation bottlenecks.
Understanding the market dynamics driving the adoption of flexible printed circuit boards worldwide.
The global flexible PCB market is experiencing exponential growth, driven by the miniaturization of consumer electronics and the electrification of the automotive sector. Industry reports project the market to reach billions of dollars by 2030, with rigid-flex boards seeing the fastest adoption rate due to their space-saving capabilities.
While the majority of high-volume flexible PCB fabrication remains concentrated in the Asia-Pacific region—specifically China, Taiwan, and South Korea—design and prototyping activities are highly distributed across North America and Europe. This requires manufacturers to offer seamless digital collaboration tools and robust local support.
The industry is governed by strict standards such as IPC-6013 (Qualification and Performance Specification for Flexible Printed Boards) and IPC-A-610 (Acceptability of Electronic Assemblies). Compliance with these standards is non-negotiable for commercial success, particularly in high-reliability sectors like medical and aerospace.
Bridging the gap between global manufacturing and local engineering requirements.
At STHL, we believe that successful manufacturing begins with clear communication. We provide localized engineering support to ensure your design intent is perfectly translated into the physical product:
We adhere to the highest international standards to ensure your products are ready for global markets. Our facilities are certified to:
Get answers to common questions about flexible PCB prototyping, design guidelines, and manufacturing processes.
High-quality manufacturing services designed to meet the rigorous demands of modern technology sectors.
STHL PCBA
