Explore our diverse range of high-reliability PCB assemblies engineered for extreme environments, industrial automation, medical devices, and smart energy systems.
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 10,000 sqm facilities house 7 advanced SMT assembly lines, 2 DIP/THT lines, 2 function testing lines, and 2 finished device assembly lines, operated by a dedicated team of over 220 professionals.
We deliver specialized electronics assembly services for energy power, communications, automotive, medical, consumer electronics, computers & storage, safety & security, commercial, and industrial products. Our global footprint spans the USA, Germany, Italy, UK, Poland, New Zealand, Argentina, Brazil, Turkey, Korea, Thailand, and 90 other regions worldwide.
As an IATF16949, ISO9001, ISO14001, and ISO13485 certified manufacturer, we guarantee RoHS compliance and rigorous quality standards. Through advanced materials analysis, state-of-the-art equipment, and multi-stage reliability testing (AOI, X-RAY, ICT, and FCT), we are recognized as a trusted, long-term PCBA partner globally.
Unlocking the competitive advantages of Shenzhen's world-class electronics manufacturing ecosystem.
Shenzhen is the global epicenter of electronics component sourcing. By manufacturing here, STHL accesses a complete ecosystem of raw materials, silicon, connectors, and enclosures within a 50-mile radius, drastically reducing lead times and shipping costs.
Our engineering team transitions designs from Initial Prototype (NPI) to High-Volume Mass Production seamlessly. China's manufacturing agility allows us to scale production capacity overnight to meet sudden market demands.
Leveraging optimized manufacturing processes, automated SMT lines, and competitive labor dynamics, we offer significant cost savings without compromising on quality. All assemblies undergo rigorous testing to match international standards.
Surface Mount Technology (SMT) is the backbone of modern electronics. At STHL, we utilize high-speed, high-precision Yamaha and Panasonic SMT placement machines capable of handling complex, high-density layouts.
We handle a wide range of advanced components, including:
Our commitment to quality goes beyond component expertise. We utilize advanced inspection techniques, including 3D Solder Paste Inspection (SPI), Automated Optical Inspection (AOI), and X-Ray inspection, to guarantee flawless assembly.
For applications requiring high mechanical strength, high voltage, or robust thermal performance, Through-Hole Technology (THT) remains indispensable. STHL excels in combining SMT and THT on complex mixed-technology boards.
Our comprehensive THT services encompass:
End-to-end electronics manufacturing services tailored to your exact specifications.
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.
Providing specialized manufacturing solutions for highly regulated global industries.
Automotive PCBA applications demand zero-defect reliability under extreme temperatures and vibration. STHL provides robust assembly services for Advanced Driver Assistance Systems (ADAS), Telematics Boxes (T-Box), and battery management systems (BMS), ensuring compliance with IATF 16949 standards.
We manufacture medical-grade electronics including surgical navigation systems, patient monitors, and diagnostic equipment. Our facility maintains strict cleanroom protocols, electrostatic control, and complete component traceability to guarantee patient safety.
From smart meters to wastewater monitoring systems, we build ruggedized electronics designed for continuous outdoor and industrial operations. We offer conformal coating and potting services to protect assemblies from moisture, dust, and chemical exposure.
Aerospace applications require mission-critical reliability. We employ advanced soldering techniques, thermal cycling tests, and rigorous material analysis to ensure our PCBAs withstand extreme thermal shock, vacuum conditions, and high vibration profiles.
| Industry Sector | Key Standard | Testing Protocol |
|---|---|---|
| Automotive | IATF 16949 | AOI + X-Ray + Burn-in |
| Medical | ISO 13485 | FCT + Traceability Tracking |
| Industrial IoT | ISO 9001 | Conformal Coating + ICT |
| Aerospace | IPC-A-610 Class 3 | 3D X-Ray + Thermal Cycling |
Staying ahead of the technology curve to deliver future-proof electronics manufacturing.
The rise of AI requires high-speed processing boards with dense BGAs and high-layer count PCBs. STHL utilizes advanced SMT placement technologies to handle high-frequency materials and complex thermal management designs.
Environmental compliance is no longer optional. We employ lead-free soldering processes, energy-efficient reflow ovens, and strict waste management systems to comply with RoHS, REACH, and ISO 14001 environmental standards.
By integrating IoT sensors and real-time data tracking on our shop floor, we monitor assembly parameters dynamically. This reduces human error, optimizes cycle times, and ensures consistent quality across production runs.
In today's volatile market, component obsolescence and counterfeit parts pose major risks to product lifecycles. STHL addresses this through a multi-layered verification process. We source directly from original component manufacturers (OCMs) and authorized distributors. Every incoming batch undergoes visual inspection, microscopic analysis, and electrical parameter verification in our in-house testing lab to guarantee authenticity and performance.
Answers to common queries regarding our electronics assembly capabilities, quality assurance, and logistics.
Delivering high-reliability PCB assemblies to leading enterprises across 90+ countries.
STHL PCBA
