One-Stop PCBA and EMS Manufacturer in China

Main Products

Components, PCBA, modules, and finished electronics.

One-Stop PCBA and EMS Services

Components Sourcing
PCB Design And Layout
PCB Prototyping and Manufacturing
PCB Assembly
Testing and Inspection
CNC Machining
Injection Molding
Cable Assembly

Welcome to STHL

For over 20 years, STHL has supported global OEMs and electronics project teams as a trusted EMS and PCBA manufacturing partner, providing custom PCB and PCBA solutions for industrial automation, automotive, medical devices, telecommunications, renewable energy, and consumer electronics.
We support the full product lifecycle, from components sourcing, PCB design, prototyping, and low-volume trial builds to high-volume PCBA production, testing, final assembly, logistics, and after-sales support.

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Countries

SMT Lines

200

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Staff

10,000

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Facility

STHL PCBA factory with SMT production lines and quality control equipment

Why Choose Us

20+ Years of EMS Expertise

Serving industries from industrial automation and automotive to medical, telecom, renewable energy, and consumer electronics.
Flexible & Scalable

No minimum order quantity, rapid prototyping, and the ability to scale seamlessly into mass production.
End-to-End Quality Control

100% traceability across the entire process, powered by strict IQC, AOI, and MES tracking.
Global Certifications

Comprehensive quality system fully compliant with EU and US regulatory standards.
Built on Trust

We sign NDAs with every client to ensure confidentiality, security, and a foundation for long-term collaboration.