Explore our diverse portfolio of high-precision printed circuit board assemblies engineered for critical applications across automotive, medical, industrial, and consumer sectors.
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.
It was established in 2006, with 20 years of experience in electronics contract assembly manufacturing. Currently, STHL has 220+ staff members. Our 10,000 sqm facilities include 7 SMT assembly lines, 2 DIP/THT lines, 2 function testing lines and 2 finished device assembly lines.
At STHL, we provide electronics assembly services for energy power, communications, automotive, medical, consumer electronics, computers & storage, safety & security, commercial and industrial products. Our customers mainly from USA, Germany, Italy, UK, Poland, New Zealand, Argentina, Brazil, Turkey, Korea, Thailand, and the other 90 regions of the world.
As an IATF16949, ISO9001, ISO14001, and ISO13485 certificated electronics assembly manufacturer, we produce products exactly comply with RoHS standard and quality guarantee. Based on our excellent engineering and production capacities in technical areas such as materials analysis & storage, advanced equipment, reliability testing (AOI, X-RAY, ICT test and function test), high effective SMT and THT assembly, we are recognized as a long-term reliable PCBA vendor by more and more customers worldwide.
Welcome to visit STHL factory at any time.
Surface Mount Technology (SMT) is the cornerstone of modern electronics manufacturing. At STHL, we deploy state-of-the-art pick-and-place machinery alongside rigorous thermal profiling to handle a wide range of advanced components, including:
Ball Grid Array (BGA) and Ultra-Fine BGA (uBGA): We have the expertise to handle these complex components with precision, ensuring reliable connections through precise solder paste deposition and optimized reflow profiles.
QFN, QFP, SOIC, and PLCC Packages: Our advanced equipment tackles various surface-mount package types efficiently, minimizing bridging and tombstoning defects.
Package-on-Package (PoP) and Small Chip Packages: We are equipped to handle even the most intricate components with tight pitch spacing, down to 01005 footprints.
But our commitment to quality goes beyond component expertise. We utilize advanced inspection techniques, including Automated Optical Inspection (AOI) and 3D X-Ray inspection, to guarantee flawless assembly and detect hidden solder voids under BGA packages.
While SMT dominates high-density designs, Through-Hole Technology (THT) remains indispensable for components subjected to mechanical stress, high power, or thermal loads. STHL PCBA also excels in Through-Hole Technology (THT) assembly. Our services encompass:
Manual and Automatic Component Insertion: We leverage both manual dexterity for complex, odd-form components and automation for high-speed, high-quality component placement.
THT Assembly Fixtures: Our custom wave-soldering fixtures ensure consistent, repeatable, and efficient assembly of through-hole components, protecting sensitive SMD parts on the bottom side.
ESD and RoHS Compliant Soldering: We prioritize electrostatic discharge protection throughout our facility and strictly adhere to RoHS compliance, guaranteeing lead-free, environmentally responsible processes.
Inspection and Functional Testing: Just like SMT assemblies, THT boards undergo rigorous visual inspection, AOI, and functional testing before shipment to ensure maximum field reliability.
From initial design optimization to final box build packaging, STHL provides a seamless, turnkey manufacturing experience designed to accelerate your time-to-market.
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.
In the global electronics landscape, sourcing from a Chinese manufacturer like STHL offers unmatched strategic benefits. The concentration of component suppliers, raw material refiners, and logistics hubs in Shenzhen creates a highly optimized ecosystem that directly translates to cost savings, agility, and rapid scaling for global enterprises.
Shenzhen is the global epicenter of electronics component distribution. By operating within this hub, STHL enjoys direct access to authorized component distributors and original manufacturers. This proximity reduces component lead times from weeks to days, allowing us to secure hard-to-find ICs and pass down volume discounts to our clients.
New Product Introduction (NPI) requires speed and flexibility. Our localized supply chain allows us to fabricate PCBs, source components, and run prototype assemblies within tight timelines. Engineering modifications (ECOs) can be executed swiftly, ensuring your design iterations are validated without costly delays.
With 10,000 sqm of manufacturing space and automated SMT lines, STHL can scale production seamlessly from low-volume prototypes to high-volume mass production. The flexibility of our labor force and automated machinery ensures we can adapt to seasonal demand spikes without compromising on delivery dates.
For global enterprises, outsourcing electronics manufacturing requires strict adherence to international standards and robust IP protection. STHL bridges the gap between East and West by providing localized support, transparent communication, and rigorous compliance frameworks.
We understand that your design files and firmware are critical assets. STHL implements strict internal security protocols, including isolated networks for customer design data, non-disclosure agreements (NDAs) with all staff and sub-vendors, and secure servers to prevent unauthorized data access. Your IP is fully protected throughout the manufacturing lifecycle.
Navigating global customs, tariffs, and shipping logistics can be complex. STHL provides comprehensive logistics support, offering FOB, CIF, and DDP (Delivered Duty Paid) shipping terms. We handle all export documentation and work with leading global couriers to ensure your circuit boards arrive safely and on schedule at your facility.
The electronics industry is undergoing rapid transformation, driven by the rise of Electric Vehicles (EVs), Internet of Things (IoT) devices, and AI-powered hardware. As a forward-thinking EMS provider, STHL continuously invests in advanced technologies to meet these evolving demands.
As devices shrink, the demand for HDI PCBs with microvias, fine lines, and high-density routing increases. STHL is equipped to handle multi-layer HDI boards, ensuring signal integrity and thermal dissipation in compact designs like tablets and wearables.
The shift towards EVs requires highly reliable control units, battery management systems (BMS), and telematics boxes. Our IATF 16949 certification ensures that our automotive PCBA processes meet the zero-defect standards required for passenger safety.
Environmental sustainability is no longer optional. We utilize lead-free soldering processes, halogen-free laminates, and energy-efficient reflow ovens to minimize our carbon footprint and help our clients meet their corporate sustainability goals.
Our assemblies are deployed in diverse, demanding environments worldwide. Below are key application scenarios where STHL's high-quality PCB assemblies deliver optimal performance:
In modern vehicles, electronic control units manage everything from steering to infotainment. STHL manufactures Anti-lock Braking System (ABS) PCB Assemblies, Electric Power Steering (EPS) boards, and Telematics Boxes (T-Box). These boards are built to withstand extreme thermal cycling, vibration, and electromagnetic interference (EMI).
Medical electronics demand absolute precision and zero failure rates. We assemble boards for Electronic Medical Record (EMR) systems and Biological Monitoring Systems. Under our ISO 13485 quality system, every board undergoes full traceability tracking, AOI, and functional testing to ensure patient safety.
Industrial environments are harsh, requiring robust components and protective coatings. We manufacture Automation Equipment PCBA and Power Supply PCBA for critical infrastructure. These boards often feature thick copper layers for high current capacity and conformal coating to protect against dust and moisture.
Browse our complete catalog of specialized printed circuit board assemblies, manufactured to the highest global standards.
STHL PCBA
