Explore our high-performance printed circuit board assemblies engineered for mission-critical applications across industrial, automotive, and consumer sectors.
Shenzhen STHL stands as a premier, high-quality provider of Electronics Manufacturing Services (EMS) in China. We support global innovators across the entire hardware lifecycle, offering integrated solutions including PCB layout, component sourcing, PCB fabrication, PCBA assembly, cable assembly, box build assembly, and comprehensive testing protocols.
Established in 2006, STHL brings nearly two decades of contract electronics manufacturing experience to the table. Our state-of-the-art 10,000 square meter facility operates with over 220 highly trained specialists, housing 7 advanced SMT lines, 2 DIP/THT lines, 2 functional testing lines, and 2 dedicated box-build/finished product assembly lines.
From micro-BGA placement to heavy-duty through-hole soldering, our technical capabilities meet the most demanding IPC Class 2 and Class 3 standards.
Surface Mount Technology (SMT) forms the backbone of modern electronics. At STHL, we utilize state-of-the-art pick-and-place systems to handle complex, high-density component layouts with extreme precision.
For components subjected to mechanical stress or high electrical loads, Through-Hole Technology (THT) remains indispensable. STHL combines automated insertion with manual craftsmanship to deliver robust connections.
From initial design validation to final packaging, we provide a seamless, single-source manufacturing journey.
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.
How modern OEMs navigate supply chain complexities, technological shifts, and sustainability requirements.
As consumer electronics, medical devices, and automotive systems demand greater processing power in smaller form factors, the industry is rapidly shifting toward HDI designs. This transition requires PCB assembly manufacturers to possess advanced capabilities in handling micro-BGAs, ultra-fine pitch components, and multi-layer stackups. STHL addresses this trend by continuously upgrading our pick-and-place machinery and investing in high-resolution 3D Solder Paste Inspection (SPI) and Automated Optical Inspection (AOI) systems to guarantee zero-defect assembly on sub-millimeter components.
Recent global disruptions have highlighted the vulnerability of electronics supply chains. Modern OEMs no longer rely solely on single-source procurement. STHL mitigates global supply chain risks through our established network of authorized component distributors worldwide. We provide real-time component lifecycle analysis, identifying end-of-life (EOL) or long-lead-time parts early in the design phase and suggesting drop-in alternatives to keep production lines running smoothly.
In sectors like automotive electronics and medical devices, failure is not an option. The demand for IATF 16949 and ISO 13485 certified manufacturing facilities has surged. STHL's compliance with these standards ensures that every step of our manufacturing process—from material receiving and baking to reflow soldering and functional testing—is fully documented, traceable, and optimized for maximum reliability.
Global regulations such as RoHS (Restriction of Hazardous Substances) and REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) require strict adherence to lead-free and non-toxic manufacturing processes. STHL operates dedicated lead-free SMT and wave soldering lines, ensuring complete segregation of materials to prevent cross-contamination and guarantee environmental compliance for products destined for Europe, North America, and beyond.
Tailored electronics manufacturing services engineered to meet the unique regulatory and technical demands of key industrial sectors.
Adhering strictly to IATF 16949 standards, we manufacture robust PCB assemblies for Advanced Driver Assistance Systems (ADAS), Head-Up Displays (HUD), and Battery Management Systems (BMS). Our processes feature thermal cycling tests and automatic X-ray inspection to ensure long-term durability under harsh operating conditions.
Under our ISO 13485 certification, we produce high-reliability PCBA for patient monitoring systems, diagnostic equipment, and therapeutic devices. We implement strict cleanroom protocols, complete component traceability, and rigorous functional testing to guarantee patient safety.
We build heavy-duty control boards, power converters, and sensor arrays designed to withstand electromagnetic interference (EMI), high temperatures, and mechanical vibration. Our selective soldering and conformal coating services provide extra protection for harsh industrial environments.
Navigating international trade, regulatory compliance, and communication barriers can be challenging. STHL bridges this gap by offering localized customer support alongside world-class manufacturing capabilities.
Our dedicated project managers act as your single point of contact, coordinating between your engineering team and our production floor. We offer flexible shipping terms (FOB, CIF, DDP) and handle all customs documentation to ensure seamless delivery to your doorstep.
Investing today in the technologies that will power tomorrow's electronics.
As electronics become more integrated, STHL is actively expanding our capabilities in several key areas:
Get answers to common queries regarding our PCB assembly capabilities, lead times, and quality assurance processes.
STHL is certified under IATF 16949 (automotive quality management), ISO 13485 (medical devices), ISO 9001 (general quality management), and ISO 14001 (environmental management). All our assemblies comply with RoHS and REACH standards.
Yes, our 7 automated SMT lines are highly flexible. We can configure dedicated lines for quick-turn prototype assembly and scale up to high-volume mass production seamlessly.
We source components directly from original manufacturers or authorized global distributors (such as Arrow, Avnet, Digi-Key, and Mouser). We also perform incoming component inspections and verification for customer-supplied parts.
We utilize a multi-stage testing protocol including 3D Solder Paste Inspection (SPI), Automated Optical Inspection (AOI), 3D X-Ray inspection for BGAs, In-Circuit Testing (ICT), and comprehensive Functional Testing (FCT) tailored to your product's specifications.
Yes, we provide full box build services. This includes installing the PCBA into custom plastic or metal enclosures, routing internal cables, performing final system-level testing, and packaging the product for direct shipment to your end customers.
For prototype assembly with all components in stock, lead times can be as fast as 3 to 5 working days. For mass production, lead times typically range from 3 to 4 weeks, depending on component availability and complexity.
Discover more specialized printed circuit board assemblies manufactured in our certified facility.
STHL PCBA
