--- Why Choose Dongji for Sheet Metal Fabrication? ---
• Expertise and Experience in the Industry:
With roots dating back to 2011, Guangdong Dongji Intelligent Device Co., Ltd. has evolved from a small hardware workshop into a high-tech enterprise with a global footprint. Over the past 13 years, we’ve built a reputation for excellence through deep industry expertise and relentless innovation. Our journey began in Tangxia Town, Jiangmen City, with just 10 employees and a modest 2,000 m² factory—today, we operate across over 38,000 m² of modern industrial space in Xinhui District, employing more than 200 skilled professionals, including over 25% technical personnel. This growth reflects not only our scale but also our ability to adapt and lead in rapidly evolving markets. Our specialization in sheet metal fabrication is backed by more than 100 technical patents—including 93 utility model patents and 23 design patents—and certifications such as ISO9001:2015, CE, UL, ETL, and ROHS. We’ve successfully delivered custom sheet metal enclosures, cabinets, and stainless steel components for Fortune 500 brands like FRANKE, Waston, Senao, and NVIDIA. For example, our collaboration with FRANKE involved designing and manufacturing precision stainless steel kitchen appliances with complex geometries and stringent hygiene standards. Our engineering team worked closely with FRANKE’s R&D division to achieve a seamless fit, ensuring durability, aesthetic appeal, and compliance with international food safety regulations. This project exemplifies how Dongji combines decades of craftsmanship with cutting-edge technology to deliver results that exceed expectations.
• State-of-the-Art Production Facilities:
At Dongji, our production facilities are engineered for precision, efficiency, and scalability. Our 38,000 m² smart factory is equipped with Germany’s TRUMPF laser cutting machines (3000W, 0.1mm accuracy), Japan’s AMADA CNC punching systems, and 12 state-of-the-art CNC bending machines capable of handling plates up to 3.2 meters long. These tools allow us to process materials ranging from cold-rolled steel to stainless steel and galvanized sheets with unmatched consistency. Our automated welding lines feature five automatic welding robots that operate 24/7, ensuring uniform welds and reducing human error. The integration of an automatic grinding and polishing production line enables us to achieve an 8K mirror finish on stainless steel parts—a hallmark of premium industrial design. Additionally, our powder coating line uses phosphorus-free organosilane nano conversion film technology, delivering rust-proof, environmentally friendly coatings with over five years of guaranteed performance. One standout case was our work with NVIDIA, where we produced robot control enclosures requiring extreme thermal resistance and electromagnetic shielding. Using our high-precision laser cutting and robotic welding systems, we achieved a tolerance of ±0.1mm across all critical dimensions, ensuring perfect compatibility with NVIDIA’s robotic systems. This level of technical mastery, combined with real-time monitoring via our MES and ERP systems, allows us to maintain full traceability and rapid turnaround times—key advantages for clients demanding reliability and speed in high-volume production.
--- Our Comprehensive Range of Services ---
• Custom Sheet Metal Fabrication Solutions:
We specialize in end-to-end custom sheet metal fabrication, from concept to delivery. Whether it’s a compact enclosure for IoT devices or a large-scale industrial cabinet, our team tailors every solution to your exact specifications. Our clients benefit from flexible design support, rapid prototyping, and scalable production. For instance, we partnered with Future Pig Farm (FPF) to develop a custom animal self-feeding equipment system using durable, corrosion-resistant stainless steel. The challenge was to create a modular, weatherproof feeding station that could withstand harsh farm environments while maintaining precise portion control. Using our CNC bending and laser cutting capabilities, we fabricated lightweight yet robust frames with integrated sensors and wireless connectivity. The final product reduced feed waste by 30% and improved livestock health outcomes—proving that even niche applications can be transformed through expert sheet metal engineering. Similarly, we designed and manufactured the DJ-SXG-10 Intelligent Fresh Cabinet for urban convenience stores, featuring a 21.5-inch HD screen, anti-pinch delivery ports, and waterproof construction. Every component—from the electro-coated steel body to the internal grid structure—was custom-fabricated to optimize space and functionality. Our ability to handle everything from simple panels to complex multi-layer assemblies makes us the ideal partner for clients seeking both versatility and precision in their sheet metal projects.
• OEM and ODM Services for Diverse Applications:
As a certified OEM/ODM/JDM provider, Dongji delivers turnkey solutions across industries—from consumer electronics and healthcare to automotive and smart infrastructure. In 2024, we were honored to assist NVIDIA in producing specialized robot enclosures for their next-generation AI-powered service robots. These enclosures required strict dimensional tolerances, EMI shielding, and thermal management features. Leveraging our in-house engineering team and advanced simulation tools, we co-developed a lightweight aluminum-stainless hybrid design that met all performance criteria. The project was completed within six weeks, thanks to our agile development cycle and seamless communication. Another success story involves our collaboration with Formlabs, where we developed and mass-produced the housing units for their industrial 3D printers. Each unit had to accommodate sensitive electronics, support ventilation, and resist vibration during operation. Using our CNC machining and automated assembly lines, we ensured consistent quality across thousands of units. Beyond hardware, we also offer full-stack services including software integration, testing, and after-sales support. For example, our intelligent rice milling machines now feature cloud-based monitoring and remote diagnostics—capabilities we’ve embedded through close collaboration with clients like Watson and Senao. This holistic approach ensures that our OEM and ODM partners receive not just products, but strategic business enablers that drive market competitiveness and customer satisfaction.
--- Quality Assurance and Certifications ---
• Rigorous Quality Control Processes:
Quality is non-negotiable at Dongji. Our comprehensive quality assurance system begins at the raw material stage with Incoming Quality Control (IQC), followed by In-Process Quality Control (IPQC), Final Quality Control (FQC), and Outgoing Quality Control (OQC). Every product undergoes multiple inspections using advanced equipment such as 2D image measuring instruments (2μm accuracy), tensile testers, hardness testers, and salt spray chambers. Our in-house lab includes a 2D OMM system that automatically judges pass/fail status, significantly reducing inspection time and human error. For example, during the production of the DJ-ZL-Z96 drink vending machine, each panel was scanned post-laser cutting to verify dimensional accuracy before proceeding to CNC stamping. Any deviation beyond ±0.1mm triggered immediate rework. We also conduct environmental stress tests—such as 96-hour salt spray exposure and 72-hour temperature cycling—to ensure long-term durability. Our commitment to quality is validated by certifications including ISO9001:2015, GB/T 19001-2016, CE, KC, UL, ETL, ROHS, and SGS. Furthermore, our ERP and MES systems provide real-time data tracking throughout the production lifecycle, enabling full traceability from batch number to final shipment. This transparency is especially critical for clients like FRANKE and Waston, who demand zero defects in their supply chain. As a result, Dongji has earned the prestigious 'AAA Enterprise' certification for quality, credit, and brand integrity. Our customers don’t just receive products—they gain confidence in a process that consistently delivers excellence.
--- Client Success Stories ---
• Collaborations with Renowned Brands:
Our track record speaks volumes about our capability to deliver at the highest level. One of our most notable achievements was partnering with NVIDIA to produce custom enclosures for their autonomous mobile robots. These enclosures needed to house high-performance computing modules while providing excellent heat dissipation, EMI shielding, and mechanical strength. Using our German TRUMPF laser cutters and automatic welding robots, we achieved a flawless fit with a tolerance of just 0.1mm. The final product passed rigorous vibration and thermal tests, earning approval for deployment in commercial environments. Another landmark project was our collaboration with FRANKE, a global leader in premium kitchen appliances. We designed and manufactured stainless steel enclosures for their smart kitchen systems, incorporating intricate cutouts for touchscreens, sensors, and ventilation. The entire process—from initial CAD modeling to final powder coating—was executed under strict quality control, resulting in a product that matched FRANKE’s exacting standards. Clients like Waston, Senao, and Formlabs have also relied on Dongji for high-volume, mission-critical components. For instance, we supplied over 10,000 power exchange cabinets for a major electric vehicle charging network in Southeast Asia, each undergoing 100% functional testing before shipment. These successes are not isolated incidents—they reflect a culture of innovation, precision, and client-centric service. By combining deep technical expertise with a global mindset, Dongji continues to empower world-class brands with reliable, scalable, and future-ready manufacturing solutions.
--- Contact Us ---
Contact us today to learn more DONGJI djengineer@djmetalwork.com 18033130213.
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