Explore our core engineering capabilities through standard and customized printed circuit board assemblies deployed globally in industrial, energy, and medical electronics.
Demystifying supply chain complexity, global regulatory paradigms, and high-precision assembly services.
Shenzhen STHL is a high-quality provider of electronics manufacturing services (EMS) in China, serving 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 built 20 years of robust experience in electronics contract assembly manufacturing. Our operations host 220+ highly skilled staff members inside a state-of-the-art 10,000 sqm facility. Equipped with 7 SMT assembly lines, 2 DIP/THT lines, 2 function testing lines, and 2 finished device assembly lines, we optimize production cycles for tier-1 enterprises.
At STHL, we provide high-fidelity electronics assembly services for energy power, communications, automotive, medical, consumer electronics, computers & storage, safety & security, commercial and industrial products. Our footprint extends across the USA, Germany, Italy, UK, Poland, New Zealand, Argentina, Brazil, Turkey, Korea, Thailand, and 90 other regions of the world. As an IATF16949, ISO9001, ISO14001, and ISO13485 certificated electronics assembly manufacturer, we produce products exactly complying with RoHS standards and strict quality guarantees.
Modern electronic modules necessitate extremely dense, fine-pitch layouts. We are engineered to handle high-complexity, advanced components with high accuracy. Our advanced SMT production lines specialize in:
For applications where physical durability, high mechanical stress resistance, or high power transfer is required, Through-Hole Technology remains indispensable. STHL's THT capabilities cover:
From schematic to finished product - providing full lifecycle electronic manufacturing service solutions under a unified quality system.
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.
Addressing the critical supply demands of Tier-1 original equipment manufacturers across high-reliability industries.
Procuring PCB components in the modern era presents complex logistical hurdles. High-reliability sectors like automotive, aerospace, and medical cannot tolerate component failure, parts obsolescence, or counterfeit sub-components. STHL resolves these constraints by implementing a zero-trust sourcing policy. Our component engineering team inspects incoming reels under high-power microscopy, performs solderability testing, and checks date codes against manufacturer certificates.
By leveraging an extensive direct network of global component distributors and silicon manufacturers, we alleviate supply bottleneck risks, shorten multi-layered bill of material (BOM) lead times, and implement dual-sourcing options for key integrated circuits (ICs).
Our solutions span diverse macro-industrial clusters:
Adapting manufacturing facilities to support next-generation technologies: HDI, IoT Integration, and advanced materials.
Adopting laser direct imaging (LDI) and micro-via stacked structures to allow ultra-thin tracing (down to 2 mil trace/space). This supports the next-generation microcontrollers and high-speed memory arrays required by AI edge devices.
Expanding the processing capacity for rigid-flex PCB boards to support wearable medical monitors, foldable consumer electronics, and complex aerospace control modules with space and weight limits.
Integrating artificial intelligence into AOI and 3D SPI (Solder Paste Inspection) systems to achieve zero-escape rates of micro-defects and dynamically adjust printer settings in real-time.
Introducing low-temperature solder (LTS) alloys to reduce energy consumption in SMT reflow lines and adopting bio-based clean agents to align with global environmental mandates.
Ensuring complete product traceability, international certifications, and strict quality control measures.
Conforming to the rigorous automotive quality standard, providing DFMEA/PFMEA assessments, full parts PPAP submission, and lot-based component level tracing.
Strict trace protocol controls and sterile environment processing validation for implantable or external clinical diagnostic systems.
Integrating environmental conservation metrics alongside strict quality management indicators, guaranteeing green production and raw materials.
In-house capability hosting 3D X-Ray laminography, automatic inline ICT testing, complex functional testing (FCT) setups, and climate/thermal shock testing.
Technical insight addressing critical design, sourcing, and manufacturing queries for global engineering teams.
Our extended manufacturing catalog featuring premium storage, audio, automation, medical, and consumer electronics assemblies.
STHL PCBA