Explore our high-performance surface mount soldering and PCB assembly capabilities across diverse industrial sectors.
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.
How modern electronics manufacturing is adapting to miniaturization, high-frequency signals, and global supply chain shifts.
The relentless demand for smaller, more powerful smart devices has pushed component sizes down to 01005 and 03015 packages. SMT soldering manufacturers must utilize ultra-precise solder paste deposition, high-accuracy placement machines, and advanced reflow profiling to prevent defects like tombstoning and bridging.
Industries such as automotive (IATF 16949) and medical (ISO 13485) demand absolute reliability. Modern surface mount soldering requires real-time 3D SPI (Solder Paste Inspection), inline 3D AOI, and high-resolution X-Ray inspection to ensure zero-defect manufacturing and complete component-level traceability.
Global OEMs are shifting toward partners who offer integrated turnkey solutions. By combining PCB fabrication, components sourcing, SMT/THT assembly, and box-build under one roof, manufacturers reduce lead times, eliminate communication bottlenecks, and mitigate geopolitical supply chain risks.
Shenzhen remains the global epicenter of electronics manufacturing, offering an unparalleled concentration of component suppliers, PCB fabricators, and logistics networks. STHL leverages this ecosystem to deliver rapid prototyping and high-volume production with unmatched speed-to-market.
Our facility integrates smart factory concepts, including automated material management, real-time production tracking, and computerized ESD monitoring systems. This ensures that every surface mount soldering project benefits from optimized thermal profiles, precise component placement, and minimized human error.
By partnering with STHL, global buyers gain access to a highly resilient supply chain capable of navigating component allocations, optimizing Bill of Materials (BOM) costs, and scaling production dynamically to meet market demands.
Deep dive into our advanced SMT and THT capabilities designed to handle the most complex electronic designs.
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 and prevent hidden solder joint defects.
STHL PCBA also excels in Through-Hole Technology (THT) assembly. Our services encompass:
Just like SMT assemblies, THT boards undergo rigorous inspection and functional testing before shipment to ensure complete operational integrity.
From design validation to final packaging, we provide end-to-end electronics contract manufacturing solutions.
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, reliable, and fully qualified to meet field demands.
Our surface mount soldering services are optimized for high-reliability applications across critical global sectors.
From MRI imaging systems to ventilators and blood pressure monitors, we adhere to ISO 13485 standards to deliver life-saving reliability.
Robust PCB assemblies designed to withstand high thermal loads, vibration, and electromagnetic interference in smart factory environments.
High-efficiency controllers for wind power systems, battery monitoring modules, and smart grid infrastructure requiring long-term stability.
Compact, high-frequency RF boards for portable Wi-Fi devices, intercoms, and environmental monitoring stations with optimized signal integrity.
Get expert answers to common questions about surface mount soldering, quality standards, and sourcing.
Explore more of our specialized PCB assembly services for smart devices, industrial controls, and power modules.
STHL PCBA
