Explore our high-precision manufacturing capabilities across medical, industrial, and consumer applications.
Navigating the complexities of modern electronics manufacturing services (EMS) in a rapidly evolving global market.
In the contemporary industrial landscape, the decision to make PCB boards is no longer just a matter of finding a low-cost fabricator. Global enterprises require strategic partners capable of mitigating supply chain risks, ensuring strict regulatory compliance, and delivering high-yield, complex assemblies. The demand is driven by rapid advancements in IoT, automotive electrification, medical diagnostics, and renewable energy systems.
OEMs worldwide face the challenge of balancing speed-to-market with uncompromising quality. From prototype validation to high-volume production, the integration of design-for-manufacturability (DFM) analysis and robust component traceability has become the baseline for modern procurement strategies.
Over two decades of excellence in contract electronics manufacturing, serving global innovators.
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 brings 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. This infrastructure allows us to seamlessly scale from rapid prototyping to high-volume production runs.
As an IATF16949, ISO9001, ISO14001, and ISO13485 certified electronics assembly manufacturer, we produce products that comply exactly with RoHS standards and quality guarantees. Our engineering and production capacities span materials analysis, advanced equipment utilization, and reliability testing (AOI, X-RAY, ICT, and functional testing).
We cater to a diverse range of industries, providing specialized assembly services for energy power, communications, automotive, medical, consumer electronics, computers & storage, safety & security, commercial, and industrial products. Our global footprint spans key markets including the USA, Germany, Italy, UK, Poland, New Zealand, Argentina, Brazil, Turkey, Korea, Thailand, and over 90 other countries.
Our commitment is built on transparency, technical expertise, and long-term partnership. By acting as an extension of our clients' engineering teams, we ensure that every design is optimized for manufacturing efficiency, cost-effectiveness, and field reliability.
State-of-the-art SMT and THT assembly technologies designed for high-yield, zero-defect production.
Our surface mount technology lines are equipped to handle the most challenging component geometries and high-density layouts. We utilize high-speed, high-precision pick-and-place machines capable of mounting components down to 01005 sizes with extreme accuracy.
While SMT dominates modern electronics, THT remains critical for power electronics, connectors, and components subjected to mechanical stress. STHL maintains dedicated THT lines that combine automated insertion with skilled manual craftsmanship.
From raw materials to fully packaged, market-ready electronic products.
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.
Tailored engineering and manufacturing strategies for highly regulated sectors.
Adhering to ISO 13485 standards, we manufacture PCBA for critical medical equipment, including digital X-ray machines and body temperature monitors. Our processes guarantee complete traceability, cleanroom-like handling, and zero-tolerance quality control.
Certified under IATF 16949, we support the automotive revolution by manufacturing high-reliability assemblies for electric vehicle (EV) charging piles, battery management systems (BMS), and in-vehicle control units designed to withstand harsh thermal and mechanical environments.
From wind power controllers to particle monitors and perimeter protection systems, we build robust electronics that operate continuously in demanding industrial environments. We focus on thermal management, moisture protection, and long-term component lifecycle management.
Embracing next-generation manufacturing technologies to keep our clients ahead of the curve.
Developing capabilities for lines/spaces below 30μm, enabling ultra-compact designs for next-gen wearables and IoT devices.
Integrating machine learning algorithms into our AOI and X-Ray systems to predict solder defects before they occur, driving yields toward zero PPM.
Expanding halogen-free materials sourcing and implementing energy-efficient reflow ovens to support global corporate sustainability goals.
Optimizing processing techniques for low-loss, high-frequency laminates (PTFE, Rogers) to support high-speed telecommunications hardware.
Ensuring your intellectual property is protected and your products meet international standards.
At STHL, quality is not a final inspection step; it is embedded in every phase of our manufacturing process. We operate under a unified quality management system that aligns with ISO 9001, ISO 14001, ISO 13485, and IATF 16949. This ensures that every board we make meets the rigorous demands of its end-use environment.
Our quality control measures include:
Operating globally requires efficient logistics and clear communication. STHL provides comprehensive DDP/FOB shipping options, handling customs clearance and documentation to ensure hassle-free delivery to your warehouse. Our engineering support team is available to assist with DFM feedback, component substitution analysis, and troubleshooting, bridging time zone differences to provide responsive service.
Whether you are located in North America, Europe, or the Asia-Pacific region, our logistics partners and dedicated account managers ensure that your production schedules are met with precision and reliability.
Answers to common technical and procurement queries regarding PCB fabrication and assembly.
Browse our extensive portfolio of custom-engineered assemblies and manufacturing services.
STHL PCBA
