Explore our high-precision PCB and PCBA products designed for global industrial, commercial, and consumer applications.
The electronic manufacturing services (EMS) ecosystem is undergoing a dramatic shift. Today, OEM PCB SMT assembly is not merely about mounting components onto boards; it is the cornerstone of cyber-physical systems, smart vehicles, and high-frequency communication infrastructures. With the market moving towards high-density integration (HDI) and sub-01005 passives, manufacturing partners must match engineering rigor with advanced micro-soldering capabilities.
From aerospace components like Air Data Inertial Reference Units (ADIRU) to safety-critical automotive systems like Electronic Stability Programs (ESP), error margins are close to zero. Manufacturers must enforce strict compliance standards including IATF 16949 for automotive and ISO 13485 for medical systems to ensure long-term system reliability under harsh thermal and physical stress conditions.
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.
Our production facilities utilize state-of-the-art pick-and-place lines, wave soldering machines, and integrated optical inspection systems.
We can handle a wide range of advanced components, ensuring precise alignment and connection density. Our SMT capability highlights include:
STHL PCBA also excels in Through-Hole Technology (THT) assembly, providing robust mechanics for heavier mechanical stress boards. Our services encompass:
From initial design evaluation through high-reliability PCB fabrication and complete testing protocols.
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 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 before leaving our facility.
How we tailor OEM PCB SMT assembly processes for highly regulated global industries.
Healthcare devices such as MRI consoles, electronic medical record modules, and telemetry systems require complete traceability. We apply structural X-ray inspections and rigorous functional test (FCT) benches to detect even microscopic voids in BGA/CSP components under compliance regulations.
Modern ESP systems, ADAS, and smart locks rely on components running under heavy vibrations and temperature swings. We utilize high-temperature lead-free solder alloys and thermal paste application strategies to prevent cracking at critical automotive junctions.
Air Data Inertial Reference Units require the highest level of stability. We employ conformal coating application lines to shield PCBA assemblies against moisture, high altitudes, and rapid pressure changes, alongside thermal shock chamber pre-qualification testing.
As a leading Chinese electronic contract manufacturer, STHL maintains investments in equipment upgrades to stay ahead of complexity shifts in the semiconductor packaging sector.
Optimizing high-speed mounters to precisely place passive components under 0.2mm length with minimized offsets.
Integrating machine learning defect classification to isolate solder bridge and fillet issues faster than standard optical libraries.
Lowering cleanroom energy baselines and adopting ultra-low temperature soldering (LTS) technologies to minimize environmental footprints.
Dust particles can deposit between the fine micro-pitch pins of complex packages such as BGA, uBGA, and QFN. If unchecked during SMT pick-and-place, these invisible pollutants create electrical shorts or high-resistance paths after reflow soldering.
STHL's temperature and humidity-controlled clean assembly environment eliminates environmental dust hazards. Along with moisture-sensitive device (MSD) dry cabinets, this mitigates popcorn effects during convective reflow cycles, ensuring high yields on multilayer boards.
Get professional answers from our engineering team regarding PCB assembly logistics, quality inspection protocols, and testing services.
Explore our specialized sub-assemblies for telemetry, medical processing, elevators, and smart power modules.
STHL PCBA
