Product application
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., our pursuit of perfection is relentless, born from a deep-seated passion to excel in the refined craftsmanship and complex science of manufacturing expertise. Our unparalleled expertise illuminates the path of precision, leading us through the prestigious realm of elite component manufacturing with unrivaled skill. As pioneers of innovation, we set the benchmark in designing and producing revolutionary intelligent automation equipment. Our state-of-the-art solutions integrate seamlessly across a vast spectrum of industries, catering to diverse needs in numerous applications, such as:
- Medical and Biotech: Offering meticulously engineered, ultra-high-precision components and innovative solutions customized for the future of medical devices.
- Semiconductors: Enhancing chip production and associated equipment with critical components that are both essential and indispensable.
- New Energy: Playing a transformative role in the innovative and sustainable development of cutting-edge energy equipment.
- Automotive: Providing essential components that fuel innovation within the automotive industry, promoting the advancement of smart and electric vehicles.
Main Products
- Expertly crafted, non-standard customized components that cater to vital sectors such as medical, automation, semiconductor, and automotive industries with unmatched excellence.
Why choose us
Core Advantages
- A Fleet of Excellence: A Benchmark of Industrial Prowess Our operations boast an unparalleled fleet of over 300 of the industry's most sophisticated machinery units, ensuring we possess an extensive and diverse catalog of equipment categories. This expansive collection empowers us to remain at the forefront of innovation and adaptability, offering cutting-edge solutions. These top-tier branded machinery units form the backbone of our precision-centric manufacturing, allowing us to expertly meet the intricate and demanding machining requirements across a broad range of industries with exceptional precision and efficiency. Our comprehensive capabilities ensure adherence to the highest quality standards and offer bespoke customization, meticulously tailored to the unique needs of our esteemed clients.
- With a prestigious 20-year legacy, we harness a wealth of manufacturing experience, seamlessly integrated with substantial technical expertise and process strengths, guaranteeing superior quality and ground-breaking innovation. This enduring expertise enables us to consistently deliver extraordinary products that surpass expectations and set new benchmarks in the industry.
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: Surpassing Industry Standards
Every piece of raw material entering our secure warehouse undergoes an exhaustive evaluation process, setting a gold standard in quality assurance. This meticulous approach involves an in-depth analysis of chemical composition and a thorough examination of physical properties. Our dedication to excellence mandates each supplier provides a Certificate of Origin and a stamped Declaration of Conformity, ensuring only superior materials are used in our high-precision medical machining services. Such rigorous authentication guarantees the integrity and purity of materials, steadfastly adhering to our consistently high standards.
Rigorous In-Process Quality Control: Continuously Striving for Perfection
Throughout the intricate machining process, each component is meticulously scrutinized to ensure its dimensions and tolerances align with our exacting specifications. This continual inspection protocol proactively intercepts potential defects, preventing non-conforming parts from advancing. Through this vigilant approach, we significantly reduce the risk of producing substandard goods, ensuring superior quality is maintained at every production phase.
Proactive and Comprehensive First Article Inspection (FAI): A Preventive Framework for Excellence
Our First Article Inspection (FAI) is the cornerstone of our strategy, adeptly identifying and resolving potential production challenges from the onset. This proactive approach ensures issues are prevented from escalating into mass production. This comprehensive FAI process is crucial for minimizing quality risks, ensuring our products consistently achieve the highest standards and reflecting our unwavering dedication to excellence throughout the production cycle.
Thorough and Detailed Comprehensive Final Inspection: The Ultimate Guardian of Quality
Before any product departs from our facility, it undergoes a meticulous final inspection process. This rigorous evaluation covers dimensions, visual appearance, and performance, alongside customer-specific requirements. This extensive inspection is a testament to our relentless commitment to quality, ensuring every part dispatched meets our exacting standards, delivering only the highest quality 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 as a beacon of precision and innovation in the world of high-precision component machining. Our journey, fueled by passion and a dedication to the art and science of engineering, has spanned over two decades. We have passionately carved our niche as pioneers in precision engineering, relentlessly pursuing technical research and setting industry benchmarks for excellence. We have accumulated an unparalleled depth of technical expertise, distinguishing ourselves as market leaders with a renowned reputation for excellence. Our supreme mastery in precision medical machining services consistently meets the most stringent tolerances and impeccable surface finishes. This solidifies our standing as the foremost choice in the medical sector, where our precision and reliability earn trust and admiration.
With four strategically located production bases, in the dynamic hubs of Shenzhen and Guiyang, and driven by an inspiring workforce of over 400 highly skilled employees, Donghui has meticulously developed a strong, vertically integrated industry chain. This chain seamlessly connects research and development, production, and delivery, guaranteeing that we meet and exceed the varied 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 excellence and 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)