Trusted Electronics Manufacturing Since 2008

Shenzhen Qingjian Electronic Technology Co., Ltd. is a high-precision electronics manufacturing service (EMS) provider, established in 2008 and headquartered in the Bangyan Apollo Industrial Park, Longgang District, Shenzhen. With over 15 years of experience, Qingjian Electronics specializes in surface-mount technology (SMT), DIP, and full-process PCBA manufacturing, offering flexible OEM and ODM solutions for industries requiring strict quality control and rapid turnaround. Our 2260 m² modern production facility integrates the entire supply chain—from PCB layout design, board fabrication, and material sourcing to PCBA assembly, mechanical integration, and functional testing—providing customers with a one-stop solution to accelerate time-to-market.

Driven by Technology. Defined by Precision.

At Qingjian Electronics, we believe that advanced manufacturing capabilities are the foundation of quality. Our facility is equipped with industry-leading SMT and inspection technologies to support both prototyping and small to medium batch production.

Core Equipment Highlights:

SMT Line:

·GKG Fully Automatic Solder Paste Printers  
·High-Speed Pick-and-Place Machines
·Samsung S1/S2 High-Speed Pick-and-Place Machines
·German ERSA Reflow and Wave Soldering Systems

Inspection Systems:

·Omron 2D/3D AOI for optical inspection
·KY-8030 SPI for real-time solder paste inspection
·Blue Eye First Article Inspection System
·Omron X-Ray (3D-RAY) for BGA/QFP inspection
Precision Assembly Capabilities:

We support component mounting as small as 0201 and 01005, and handle ultra-fine pitch QFP and BGA packages down to 0.3mm, meeting the highest standards in telecommunication, automotive, and medical sectors.

Integrated Quality Systems

We strictly follow the ISO9001 quality management system and are supported by a fully digital MES (Manufacturing Execution System). This ensures traceability, real-time production monitoring, and consistent quality at every step.

Our comprehensive quality control process includes:

·Incoming material inspection
·Solder paste volume control
·AOI/ICT/functional testing
·Environmental and aging tests
·Final QA verification and full trace documentation

 From the first component to the final packaged unit, every product we build undergoes rigorous testing to ensure zero-defect delivery. 

Electronics Manufacturing Process Flow

·Customer Requirements Input
·Design Review & DFM Optimization
·Material Procurement & Inspection
·SMT Assembly Process
·DIP Insertion/Wave Soldering
·Visual Inspection
·PCBA Functional Testing
·Conformal Coating
·Final Product Assembly
·System Burn-in Testing
·Final Quality Control
·Packaging & Warehousing

Industries We Serve

Qingjian Electronics supports clients across a broad range of industries, including:

·Telecommunications and Networking
·Automotive Electronics
·Medical Devices and Health Tech
·Financial and Security Systems
·Industrial Automation
·Consumer Electronics & Smart Appliances

We also collaborate with R\&D institutes, military contractors, and SMEs seeking agile and high-quality EMS support.

Why Technical Teams Choose Qingjian

·Expertise in both prototype and volume PCBA production
·Flexible support for engineering samples and product iterations
·Strong engineering team to provide DFM (Design for Manufacturability)feedback
·Advanced equipment enabling high-precision placement and inspection
·Quick response and transparent project tracking through MES

Whether you're building next-generation IoT hardware or mission-critical industrial controllers, we ensure each board meets your performance and reliability requirements.

Let's Build What's Next — Together

With a mission to bridge innovation and manufacturing, Qingjian Electronics is committed to being more than a vendor—we are your technical partner. Our team is here to help you bring your product ideas to life with speed, precision, and scalability.

Contact us today to explore how we can support your next project with professional EMS solutions.