Shenzhen STHL is a premier Electronics Manufacturing Services (EMS) provider in China, specializing in the complex requirements of industrial automation. Since 2006, we have anchored our operations in precision and reliability, supporting the global shift toward Industry 4.0.
Our 10,000 sqm facility is equipped with 7 high-speed SMT lines and dedicated testing suites, ensuring that every industrial automation controller we produce meets the rigorous demands of 24/7 factory environments. We serve over 90 regions, including the USA, Germany, and Japan, holding certifications like IATF16949 and ISO13485.
The landscape of Electronic Manufacturing for Industrial Automation Controllers is undergoing a radical transformation. As factories transition to "Lights Out" manufacturing, the controllers—the brains of the operation—must be more compact, powerful, and resilient than ever before.
Modern controllers are no longer just executing simple logic; they are processing data at the edge. This requires high-density PCB designs capable of supporting advanced processors and AI accelerators. At STHL, our SMT capabilities handle fine-pitch components like 01005 and complex BGAs to accommodate this miniaturization.
Industrial controllers often operate in high-temperature, high-vibration, and chemically active environments. We utilize advanced conformal coating, selective soldering, and rigorous thermal cycling tests to ensure longevity and zero-fail performance in the field.
The demand for 5G, Wi-Fi 6, and LoRaWAN integration in industrial controllers is skyrocketing. Our RF testing capabilities and precision antenna placement ensure seamless connectivity for remote monitoring and predictive maintenance.
Our technical prowess allows us to handle the most sophisticated industrial electronics:

7 automated lines for prototype and mass production. Precise component placement and RoHS-compliant soldering for industrial reliability.

From simple single-layer to complex rigid-flex and multi-layer boards (up to 32 layers) using premium high-TG materials.

Mitigating supply chain risks through a vast network of certified suppliers, ensuring genuine parts for your controllers.

Custom cabling solutions with advanced shielding to prevent EMI in noisy industrial environments.

Full system integration, including enclosure assembly and final functional testing, delivering a shelf-ready product.

Rigorous AOI, X-Ray, and functional testing to guarantee 100% qualification before shipment.
Our manufactured controllers are deployed in diverse high-stakes environments:
High-speed processing units for real-time motion control and synchronization in automotive assembly lines.
Controllers for energy distribution and monitoring, requiring extreme thermal stability and surge protection.
PCBA for automated laboratory equipment, adhering to ISO 13485 standards for life-critical reliability.
In the era of smart manufacturing, the quality of your industrial automation controllers defines your competitive edge. STHL combines two decades of manufacturing excellence with cutting-edge technology to bring your designs to life. From PCB layout to complete box-build, we are your trusted EMS partner in China.