Product application
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., our unwavering dedication to perfection is driven by an insatiable passion for excellence in the sophisticated science and exquisite craftsmanship of manufacturing expertise. Our commitment lies in exceeding the loftiest standards of quality and innovation, always pushing the boundaries of what's possible. Our unparalleled expertise lights the way of precision, guiding us with unmatched skill and dedication through the esteemed domain of elite component manufacturing. As pioneers of innovation, we set the golden standard in the design and production of groundbreaking intelligent automation equipment. Our state-of-the-art solutions seamlessly integrate across a vast spectrum of industries, catering to varied needs in multiple applications, including:
- Medical and Biotech: Providing meticulously engineered, ultra-high-precision components and visionary solutions crafted for the burgeoning future of medical devices.
- Semiconductors: Enhancing chip production alongside associated equipment with essential, irreplaceable critical components.
- New Energy: Leading the frontier in innovative and sustainable development for pioneering energy equipment.
- Automotive: Delivering indispensable components that propel innovation within the automotive industry, advancing the realm of smart and electric vehicles.
Main Products
- Masterfully crafted, non-standard customized components that serve the vital sectors of medical, automation, semiconductor, and automotive industries with unrivaled excellence and precision.
Why choose us
Core Advantages
- A Fleet of Excellence: A Benchmark of Industrial Prowess Boasting over 300 of the industry's most sophisticated machinery units, our operations are a testament to our unparalleled industrial prowess. This extensive and varied collection of cutting-edge equipment allows us to lead in innovation and adaptability, crafting the most advanced solutions for our clients. These top-tier branded machinery units are the foundation of our precision-centric manufacturing, enabling us to masterfully meet the intricate and demanding machining needs of a wide array of industries with unmatched precision and efficiency. Our comprehensive capabilities ensure adherence to the most rigorous quality standards, providing bespoke customization meticulously tailored to meet the specific requirements of our valued clients.
- Celebrating a prestigious 20-year legacy, we draw upon a wealth of manufacturing experience seamlessly integrated with vast technical expertise and process strengths. This ensures superior quality and pioneering innovation, allowing us to consistently deliver extraordinary products that exceed expectations and set new industry benchmarks.
State-of-the-Art Production Equipment: Cutting-Edge Technology for Unmatched Quality
High-Precision Inspection Equipment: Ensuring Flawless Accuracy and Consistency
Quality Ensurance
Meticulous and Rigorous Incoming Material Inspection: Elevating Beyond Industry Paradigms
Every piece of raw material that enters our secure warehouse is subjected to an unyielding evaluation process, setting an unparalleled benchmark in quality assurance. This painstakingly detailed approach involves a comprehensive analysis of chemical compositions and a thorough examination of all physical properties. Our unwavering commitment to excellence dictates that each supplier must provide a Certificate of Origin along with a stamped Declaration of Conformity, ensuring that only the most superior materials are utilized in our high-precision medical machining services. Such stringent authentication ensures the integrity and purity of our materials, consistently upholding our high standards of quality.
Rigorous In-Process Quality Control: Relentlessly Pursuing Perfection
Throughout the intricate machining process, each component is meticulously scrutinized to ensure its dimensions and tolerances align flawlessly with our exacting specifications. This ongoing inspection protocol proactively intercepts potential defects, effectively preventing any non-conforming parts from advancing further in the process. Through this vigilant approach, we dramatically reduce the risk of producing substandard goods, ensuring that superior quality is preserved at every stage of production.
Proactive and Comprehensive First Article Inspection (FAI): A Preventive Framework for Exceptional Standards
Our First Article Inspection (FAI) serves as the cornerstone of our strategic approach, expertly identifying and resolving potential production challenges right from the start. This proactive method ensures that any issues are swiftly addressed before they can escalate into mass production. This thorough FAI process is instrumental in minimizing quality risks, consistently enabling our products to achieve the highest standards and reflecting our unwavering dedication to excellence throughout the entire production cycle.
Thorough and Detailed Comprehensive Final Inspection: The Ultimate Guardian of Impeccable Quality
Before any product leaves our facility, it is subjected to an exhaustive final inspection process. This rigorous evaluation encompasses dimensions, visual appearance, and performance, as well as any customer-specific requirements. This extensive inspection is a testament to our relentless commitment to quality, ensuring every part dispatched meets our stringent standards, delivering only the highest caliber products to our esteemed and valued customers.
Packaging & Shipping
Company Profile
Established in the vibrant year of 2009, with roots tracing back to 2002, Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd. stands proudly as a beacon of precision and a symbol of innovation in the world of high-precision component machining. Our journey, fueled by relentless passion and steadfast dedication to the art and science of engineering, has spanned over two glorious decades. We have passionately carved our niche as pioneering trailblazers in precision engineering, tirelessly pursuing groundbreaking technical research and setting the industry's gold standard for unparalleled excellence. Our Expertise We have amassed an unparalleled depth of technical expertise, distinguishing ourselves as undisputed market leaders with a renowned reputation for unwavering excellence. Our supreme mastery in precision medical machining services consistently exceeds the most stringent tolerances, delivering impeccable surface finishes. This solidifies our standing as the foremost choice in the medical sector, where our precision and reliability earn us widespread trust and admiration from industry leaders and clients alike.
Our Infrastructure With four strategically located production bases, nestled in the dynamic and innovative hubs of Shenzhen and Guiyang, and driven by an inspiring workforce of over 400 highly skilled and dedicated employees, Donghui has meticulously developed a robust and vertically integrated industry chain. This seamless chain intricately interconnects research and development, state-of-the-art production, and efficient delivery, ensuring that we not only meet but consistently exceed the diverse needs of our clients with remarkable efficiency and unmatched quality. Our cutting-edge facilities are fully equipped to handle the most complex and challenging machining tasks, reinforcing our prestigious reputation for pioneering excellence and forward-thinking innovation.
Workshop Display
Certifications

FAQ
1. What is CNC machining?
CNC (Computer Numerical Control) machining is a manufacturing process where pre-programmed computer software controls the movement of machinery and tools. It's used for a wide range of materials, including metal, plastic, and wood.
2. What materials can be used in CNC machining?
CNC machines can handle a variety of materials such as:
- Metals (aluminum, steel, titanium, brass, copper)
- Plastics (ABS, POM, nylon, acrylic)
- Wood and composite materials
- Ceramics and more.
3. What is the difference between CNC milling and CNC turning?
- CNC Milling: Involves rotating the cutting tool and moving it along multiple axes to remove material from a workpiece.
- CNC Turning: Involves rotating the workpiece and using a stationary cutting tool to remove material, mainly for cylindrical parts.
4. How do I choose the right CNC machining service?
Factors to consider include:
- Material requirements
- Tolerance and precision
- Production volume
- Lead time
- Cost-effectiveness
5. What is the typical lead time for CNC machining?
Lead times depend on the complexity of the part, the material, the required finish, and the production volume. Typically, CNC machining can take anywhere from a few days to a couple of weeks for a prototype or small batch, but larger orders may take longer. Normally 7 days for prototyping and 20 days for mass production shipment.
6. What is the maximum size of a part that can be CNC machined?
The size limitations depend on the specific CNC machine being used. Large-scale machines can accommodate parts up to several meters in length, while smaller machines are typically limited to parts around 1000mm in length or less.
7. What is the accuracy and tolerance of CNC machining?
CNC machining offers high precision, with tolerances typically ranging from ±0.01mm to ±0.1mm. However, the exact tolerance will depend on the machine and the material used.
8. How much does CNC machining cost?
CNC machining costs vary based on factors such as:
- Material choice
- Part complexity
- Machine time
- Labor costs
- Quantity (prototypes vs. mass production)
9. What types of finishes can be applied to CNC machined parts?
Common finishes include:
- Anodizing
- Powder coating
- Polishing
- Painting
- Bead blasting
- Electroplating
10. Can CNC machining be used for prototyping?
Yes, CNC machining is widely used for prototyping because it allows for the quick production of precise parts. It's ideal for low-to-medium volume production runs and allows engineers to test designs and make adjustments before mass production.
11. What are some common applications of CNC machining?
CNC machining is used across various industries, including:
- Aerospace and aviation
- Automotive
- Medical devices
- Consumer electronics
- Industrial machinery
12. What are the common challenges in CNC machining?
- Tool wear: As tools wear out, they affect the quality of the parts being machined.
- Material properties: Different materials behave differently during machining, requiring adjustments to the process.
- Programming complexity: Complex designs may need advanced programming skills and specialized machines.
13. How can I ensure the quality of CNC machined parts?
Quality can be ensured through:
- First Article Inspections (FAI)
- In-process inspections
- Final inspections
- Use of quality control tools like CMM (Coordinate Measuring Machine)