High-reliability printed circuit board assemblies engineered for performance in medical, industrial, aerospace, and consumer electronics applications.
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 backbone of modern electronics. Our factory utilizes high-precision pick-and-place equipment capable of deploying complex architectures. We can handle a wide range of advanced components, including:
But our commitment to quality goes beyond component expertise. We utilize advanced inspection techniques, including AOI and X-Ray inspection, to guarantee flawless assembly, targeting zero solder voiding and micro-alignment anomalies.
While SMT has driven product miniaturization, Through-Hole Technology remains vital for high-power distribution, robust connectors, and mechanically stressed industrial products. STHL PCBA also excels in Through-Hole Technology (THT) assembly. Our services encompass:
End-to-End solutions designed to accelerate time-to-market and guarantee high quality.
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 offer 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 assembly 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.
Insights into the evolution of global hardware development and strategic component sourcing.
Global procurement teams now prioritize geographical supply chain resilience. Through dual-sourcing partnerships and component lifecycle evaluation, manufacturers can safeguard production schedules against component allocation spikes and wafer capacity deficits.
With IoT, wearables, and medical implants scaling down, PCB configurations demand advanced HDI (High-Density Interconnect) routing, blind/buried vias, and 01005 passives placement. Ensuring signal integrity in ultra-tight layouts is a critical competency.
Industries such as automotive (IATF 16949) and medical electronics (ISO 13485) require traceability and a zero-defect mandate. Every component, solder joint, and functional state must be validated via electronic databases and AOI/X-Ray imaging.
Targeted electronics contract manufacturing services customized to meet specialized regulatory frameworks.
Medical electronic assemblies demand extreme reliability, biocompatibility, and manufacturing trace documentation. We produce PCBA modules for implantable pacemakers, automated blood pressure cuffs, and real-time laboratory diagnostics equipment. Our environmental and clean-room handling capabilities prevent particulate contamination, while strict configuration control manages design change cycles.
Safety-critical automotive systems require robust engineering. We assemble Supplemental Restraint Systems (SRS) and intelligent flight control computers for advanced mobility platforms. Our processes utilize thermal cycling, vibration testing, and precise paste inspection systems (SPI) to guarantee structural solder joint integrity in harsh operational environments.
From solar inverter control boards to high-power battery management systems (BMS), STHL designs manufacturing workflows capable of handling heavy copper layers, high thermal dissipate substrates, and industrial protective coatings (conformal coating) to protect against dust, moisture, and chemical exposure.
Connectivity is reshaping manufacturing. We manufacture RF-critical modules, environmental data loggers, network video recorders (NVR), and smart home nodes. Our testing setups include RF shield chambers to calibrate and verify Wi-Fi, Bluetooth, LoRa, and cellular communication boards.
Operating under high G-forces, radical temperature fluctuations, and low air pressures, aerospace electronics cannot fail. STHL implements specialized manufacturing techniques, including epoxy underfill for BGAs, mechanical mounting reinforcement, and leaded soldering (where compliant and requested by aerospace exemptions) to prevent tin whiskers and mechanical failure.
Securing global logistics pipelines, intellectual property, and environmental standards.
We secure customer intellectual property by separating network connections between assembly lines, masking firmware flashing stations, and utilizing access control systems inside our testing facilities.
STHL complies with environmental regulations, including RoHS, REACH, and WEEE directives. Lead-free solder matrices, halogen-free PCB options, and certified waste disposal processes protect the ecosystem.
We provide localized import/export compliance handling, door-to-door delivery services (DDP, FOB, CIF, EXW), and bonded warehousing support to manage transport challenges and simplify global shipment logistics.
Investing in smart factory solutions and advanced materials to support next-generation hardware designs.
As the electronics manufacturing landscape moves toward automation and digitalization, STHL continues to expand our technical capabilities. Our roadmap is designed to address the challenges of tomorrow's product design cycles:
Furthermore, our engineering teams are researching materials to support higher frequency processing (e.g., millimeter-wave systems) and advanced thermal management solutions like ceramic substrates and metal-core PCBs (MCPCB) for electric vehicles and LED illumination arrays.
By blending technological modernization with strict compliance certifications, we help hardware designers transition from engineering validation test (EVT) phases to mass-market commercialization.
Answers to common questions regarding contract electronics manufacturing, components, and logistics.
Explore our specialized assemblies designed for safety-critical medical devices and communication infrastructure.
STHL PCBA
