Explore our diverse portfolio of high-precision printed circuit board assemblies engineered for mission-critical applications across global markets.
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.
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.
STHL PCBA also excels in Through-Hole Technology (THT) assembly. Our services encompass:
How STHL leverages the Shenzhen electronics ecosystem to deliver rapid-turnaround solutions to global enterprises.
Located in the heart of China’s Silicon Valley, STHL has direct, real-time access to the world’s most dense cluster of component distributors, raw material suppliers, and specialized tooling shops. This proximity reduces component sourcing lead times from weeks to hours, enabling true quick-turn execution.
OEMs in the USA, Germany, and the UK demand more than just low costs; they require IP protection, transparent communication, and strict adherence to technical specifications. STHL bridges this gap with bilingual project managers, secure data handling systems, and detailed DFM (Design for Manufacturability) reporting.
With established partnerships with major international couriers (DHL, FedEx, UPS) and custom brokers, we guarantee fast transit times. Whether it is prototype delivery in 3 days or scheduled container shipments for mass production, our logistics network ensures hassle-free delivery to your doorstep.
Our commitment to rigorous international standards ensures your products meet all regulatory requirements for medical, automotive, and industrial markets.
We maintain strict traceability, cleanroom-level handling, and comprehensive documentation required for healthcare electronics, ensuring absolute reliability for life-support and diagnostic equipment.
Our production lines implement PPAP (Production Part Approval Process), FMEA (Failure Mode and Effects Analysis), and rigorous thermal cycling tests to meet the zero-defect standards of the automotive industry.
All materials sourced and processes used are 100% lead-free and compliant with RoHS and REACH directives, protecting both the environment and end-users.
From incoming material inspection (IQC) to in-process quality control (IPQC) and final quality assurance (FQA), our quality management system ensures consistent output quality.
Staying ahead of the curve with advanced capabilities designed to support next-generation hardware designs.
As devices shrink, the demand for 01005 and 0201 component placement grows. STHL utilizes state-of-the-art SMT placement machines capable of handling micro-components and ultra-fine pitch BGAs with micron-level accuracy.
The explosion of IoT devices requires specialized RF testing, antenna integration, and low-power optimization. Our functional testing lines are equipped to calibrate and verify wireless protocols including Wi-Fi, Bluetooth, Zigbee, and LoRa.
We are integrating AI algorithms into our AOI (Automated Optical Inspection) and X-Ray systems to detect solder bridges, voids, and component misalignments with higher speed and lower false-call rates than traditional methods.
From concept to finished product, STHL provides a complete suite of electronics manufacturing services.
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.
Our assemblies power critical systems across diverse industries, proving their reliability in the field every day.
From complex anesthesia machines to patient monitors, our ISO 13485 certified processes ensure that every solder joint and component placement meets the stringent safety margins required for healthcare environments.
Our automotive-grade PCBAs are designed to withstand extreme thermal variations, mechanical vibrations, and electromagnetic interference, powering engine control units, lighting systems, and sensor modules.
We manufacture robust control boards for wastewater monitoring, gas leak detection, and energy management systems, engineered to operate continuously in harsh industrial environments.
Get answers to common questions about our quick-turn assembly services, capabilities, and processes.
From GPS receivers to smart home gateways, discover our full range of custom electronic contract manufacturing capabilities.
STHL PCBA