Explore our specialized printed circuit board assemblies manufactured under strict IATF 16949 and ISO 13485 standards for global missions.
Shenzhen STHL is a premium provider of electronics manufacturing services (EMS) in China. We serve customers worldwide along the entire industry chain, including PCB layout, component sourcing, PCB fabrication, PCBA assembly, cable assembly, box build assembly, and comprehensive testing services.
Established in 2006, STHL has built over 20 years of experience in electronics contract assembly manufacturing. Today, our 10,000 sqm facilities host 220+ highly skilled staff members. We operate 7 SMT assembly lines, 2 DIP/THT lines, 2 functional testing lines, and 2 finished device assembly lines.
We provide electronic assembly services for energy power, communications, automotive, medical, consumer electronics, computers & storage, safety & security, and industrial applications. Our primary clients are located in the USA, Germany, Italy, the UK, Poland, New Zealand, Argentina, Brazil, Turkey, Korea, Thailand, and over 90 other countries and regions.
As an IATF 16949, ISO 9001, ISO 14001, and ISO 13485 certified manufacturer, we produce products that fully comply with RoHS standards. Leveraging advanced equipment and testing methodologies (AOI, X-RAY, ICT, and functional testing), STHL has become a trusted long-term OEM manufacturing partner worldwide.
Our surface mount capabilities are designed to handle complex component requirements, ensuring high precision and electrical reliability:
We utilize automated optical inspection (AOI) and high-resolution 3D X-Ray laminography to detect internal solder voids, misalignment, and hidden defects.
STHL excels in Through-Hole Technology (THT) assembly, providing durability and mechanical strength for high-voltage, high-stress, and power electronics applications:
From prototyping to high-volume production, STHL provides complete design, component sourcing, fabrication, and assembly services.
We operate 7 automated SMT lines for prototypes and mass production, using high-precision pick-and-place equipment and RoHS-compliant lead-free soldering.
We produce single-layer to complex multi-layer rigid, flexible, and rigid-flex PCBs using premium materials to meet customer specifications.
Our supply chain network ensures access to genuine, certified electronic parts, helping to reduce lead times and avoid counterfeit risk.
We manufacture custom cable systems, connectors, and shielding configurations for various industrial applications.
Our systems integration covers mounting PCBs into enclosures, routing cables, and performing final packaging and testing before shipment.
We run flying probe, in-circuit, and functional testing to verify product performance and check for circuit or component issues.
How our automated facility in Shenzhen optimizes production workflows to support fast scaling and cost efficiency.
We utilize automated pick-and-place lines, continuous dry-nitrogen storage cabinets, and inline reflow ovens with multi-zone closed-loop temperature control to improve throughput and reduce thermal stress.
Our ERP and MES systems track materials from incoming receipt to final shipment. Solder paste, active components, and PCBs are fully traceable via unique 2D barcodes.
Located in the Shenzhen electronics cluster, we maintain direct relationships with authorized component distributors. This helps us secure parts, reduce lead times, and optimize component pricing.
We deliver specialized printed circuit board assemblies across major industrial verticals requiring strict compliance.
We manufacture PCBs for medical monitoring, diagnostics, and pacemakers. STHL adheres to class III inspection protocols, ensuring traceability and process control for life-support devices.
We assemble HUDs, safety system modules, sensors, and lighting controls that are built to withstand thermal cycling, vibration, and automotive operating conditions.
We provide robust assemblies for power inverters, wastewater monitoring systems, and photovoltaic controls, designed to handle high voltages and currents.
We assemble flight control computers (FCC) and cockpit recorders with heavy copper designs, conformal coating, and strict testing to ensure reliability in harsh environments.
Modern electronics demand higher density, faster speeds, and improved thermal management. At STHL, we are continually updating our manufacturing processes to support advanced product development:
Navigating global compliance requirements is a critical phase of product deployment. We maintain strict manufacturing and regulatory certifications to streamline international trade:
Answers to common technical, quality, and supply chain questions for PCBA and PCB fabrication projects.
Additional custom assemblies produced for aerospace, medical imaging, and industrial automation networks.
STHL PCBA
