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 wordlwide.
Welcome to visit STHL factory at any time.
Leveraging state-of-the-art machinery and rigorous process controls to assemble complex, high-density control boards.
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 integrates smart manufacturing and localized ecosystem advantages to deliver cost-effective, reliable PCB control boards.
In the modern electronics landscape, manufacturing efficiency is no longer just about cheap labor; it is about supply chain integration, automation, and agility. Located in Shenzhen, the global epicenter of hardware innovation, STHL leverages a mature local ecosystem that allows us to source raw materials, fabricate PCBs, and secure hard-to-find components faster than almost any other region in the world.
Our automated component storage systems maintain strict temperature and humidity controls (MSL compliance), preventing component degradation and ensuring 100% traceability.
By integrating SPI (Solder Paste Inspection) with SMT placement machines, our systems dynamically adjust alignment offsets in real-time, reducing defect rates to parts-per-million (PPM) levels.
Our 7 SMT lines are optimized for rapid changeovers, allowing us to seamlessly transition from high-mix, low-volume (HMLV) prototyping to high-volume mass production without costly downtime.
By maintaining direct strategic partnerships with original component manufacturers and authorized global distributors (Arrow, Avnet, Future Electronics), STHL bypasses intermediate brokers. This ensures component authenticity, eliminates the risk of counterfeit parts, and secures allocation priority during global chip shortages.
Tailored PCB control board manufacturing services designed to meet the strict regulatory and environmental demands of specific sectors.
We manufacture critical automotive control boards, including Motor Control Units (MCUs) and Battery Management Systems (BMS). Our processes adhere to the zero-defect standard required for passenger safety and harsh under-the-hood environments.
From life-support pacemakers to portable ultrasound equipment and blood pressure monitors, STHL provides class II and class III medical PCBA manufacturing with full device history records (DHR) and complete component traceability.
We build heavy-duty industrial control boards, DC-DC converters, and environmental monitoring systems designed for continuous operation (24/7/365) under extreme thermal conditions and electromagnetic interference (EMI).
How STHL is adapting to next-generation electronic designs, miniaturization, and high-frequency applications.
As control boards become smaller, faster, and more integrated, the demands on EMS providers multiply. STHL is actively investing in R&D and equipment upgrades to support the next wave of hardware innovation:
Modern IoT devices and smart controllers require multi-layer PCBs with microvias, blind/buried vias, and component pitches down to 0.35mm. Our SMT lines utilize high-precision Panasonic and Yamaha placement heads capable of mounting 01005 passive components with ±0.03mm accuracy.
High-power applications like LED grow lights and DC-DC converters generate significant heat. STHL specializes in assembling metal-clad PCBs (Aluminum and Copper core) and applying high-performance thermal interface materials (TIMs) to ensure long-term system reliability and prevent thermal throttling.
We are transitioning our inspection systems from rule-based AOI to AI-powered deep learning models. This reduces false calls, speeds up inspection cycles, and detects subtle defects like solder micro-voids and component micro-cracks that traditional systems might miss.
Ensuring seamless international trade, regulatory compliance, and localized support for global enterprises.
Our manufacturing facility is fully certified under IATF 16949 (Automotive), ISO 13485 (Medical), ISO 9001 (Quality), and ISO 14001 (Environmental Management). All assemblies comply with RoHS and REACH standards.
We understand the value of your intellectual property. STHL enforces strict NDAs, secure server storage for Gerber files, and restricted access to production zones to guarantee your designs remain confidential.
Serving clients in over 90 countries, we offer flexible shipping terms (FOB, CIF, DDU, DDP) and handle custom clearances, ensuring your finished control boards arrive at your warehouse without administrative delays.
End-to-end electronics contract manufacturing services tailored to your project's lifecycle.
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 offer 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 assembly 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.
Get answers to common queries regarding our PCB control board manufacturing capabilities, lead times, and quality standards.
STHL PCBA
