Explore our core high-precision assemblies engineered for harsh environments, industrial automation, and smart control systems.
In today's hyper-connected industrial landscape, cable wire assemblies and wire harnesses serve as the vital nervous system for complex machinery, medical devices, automotive systems, and aerospace technologies. As electronic components become smaller and data transmission speeds accelerate, the demand for high-reliability, custom-engineered interconnect solutions has reached unprecedented levels.
Global industries are shifting rapidly toward electrification, IoT integration, and high-frequency data systems. Standard off-the-shelf cabling solutions no longer suffice for applications that require strict electromagnetic interference (EMI) shielding, high-voltage tolerance, extreme thermal resistance, and structural durability. Partnering with an experienced, certified manufacturer is essential to ensure operational safety, regulatory compliance, and seamless system integration.
At STHL, we address these challenges by providing end-to-end engineering and manufacturing services. We combine advanced wire harness fabrication with state-of-the-art printed circuit board assembly (PCBA) to deliver complete, turnkey electro-mechanical systems. Our solutions are designed to withstand harsh environmental conditions while maintaining signal integrity and power transmission efficiency, giving our global clients a distinct competitive advantage.
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.
Integrating high-density SMT and robust Through-Hole technology to support complex electro-mechanical cable integrations.
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:
Tailoring cable assemblies and wire harnesses to the stringent demands of global commercial and industrial sectors.
Medical cable assemblies require biocompatible materials, sterilization resistance (autoclave), and low-noise signal transmission. We manufacture sensor cables, patient monitoring leads, and diagnostic equipment wiring under strict ISO 13485 guidelines to guarantee patient safety and device reliability.
With IATF 16949 certification, STHL produces high-voltage wire harnesses, battery management system (BMS) cables, and sensor assemblies that withstand extreme vibrations, thermal fluctuations, and exposure to automotive fluids.
Continuous-flex and high-torsion cables are essential for robotic arms and automated factory floors. Our industrial-grade polyurethane (PUR) and thermoplastic elastomer (TPE) jacketed assemblies resist abrasion, oils, and continuous mechanical stress.
From initial prototyping to high-volume mass production, we provide end-to-end manufacturing and testing 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 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.
As high-speed data transmission and miniaturization continue to define the electronics industry, our engineering team is actively developing next-generation interconnect solutions. Our technical roadmap focuses on three primary pillars:
With the expansion of 5G, IoT, and high-resolution imaging, we are optimizing shielding geometries and dielectric materials to minimize insertion loss and electromagnetic interference (EMI) in high-frequency applications.
Integrating micro-sensors directly into the cable overmolding allows for real-time monitoring of temperature, strain, and electrical resistance, enabling predictive maintenance in critical industrial machinery.
In alignment with global environmental initiatives, we are expanding our use of recyclable thermoplastic elastomers (TPE) and halogen-free compounds that reduce environmental impact without sacrificing durability.
Our commitment to zero-defect manufacturing is backed by rigorous testing protocols and international certifications.
To maintain our status as a trusted global EMS partner, STHL implements a multi-tiered quality management system. Every cable wire assembly and PCBA undergoes strict verification processes before leaving our facility:
Technical insights and answers to common queries regarding our custom cable assembly and PCBA manufacturing services.
High-reliability electronic contract manufacturing for industrial, commercial, and consumer applications.
STHL PCBA
