Product application
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., excellence is not just a promise-it's a passion. We are driven by an unwavering dedication to mastering the sophisticated art and complex science of manufacturing, ensuring unparalleled quality and innovation. With unmatched expertise, we illuminate the path to precision, serving as a beacon in the elite domain of top-tier component manufacturing. Leading the charge in innovation, we are at the forefront of designing groundbreaking intelligent automation equipment. Our cutting-edge solutions seamlessly integrate across a multitude of industries, satisfying diverse needs in numerous applications, including:
- Medical and Biotech: Offering meticulously engineered, high-precision components and pioneering solutions crafted for the next wave of medical devices.
- Semiconductors: Elevating chip production and related equipment with indispensable, essential core components.
- New Energy: Playing a pivotal role in the innovative, sustainable evolution of advanced energy equipment.
- Automotive: Supplying vital components that drive innovation in the automotive industry, supporting the evolution of smart and electric vehicles.
Main Products
- Expertly crafted, non-standard customized components serving essential sectors like medical, automation, semiconductor, and automotive industries, setting the standard for distinction.
Why choose us
Core Advantages
- A Fleet of Excellence: A Benchmark of Industrial Prowess Our operations are bolstered by an impressive fleet of over 300 of the industry's most cutting-edge machinery units, ensuring a comprehensive catalog of equipment categories. This extensive collection empowers us to remain at the forefront of innovation and adaptability, positioning us as leaders in precision engineering. These top-tier branded machinery units form the backbone of our precision-focused manufacturing, enabling us to expertly meet the multifaceted and rigorous machining requirements across a diverse range of industries with exceptional precision and efficiency. Our expansive capabilities ensure adherence to the highest standards of quality while providing bespoke customization meticulously tailored to the unique needs of our esteemed clients.
- With a distinguished 20-year legacy, we possess a wealth of manufacturing experience seamlessly blended with significant technical expertise and process strengths. This ensures superior quality and pioneering innovation, equipping us to consistently deliver extraordinary products that not only meet but exceed expectations, redefining industry standards.
State-of-the-Art Production Equipment: Incorporating Cutting-Edge Technology for Unmatched Quality
High-Precision Inspection Equipment: Guaranteeing Flawless Accuracy and Consistency through Advanced Methods
Quality Ensurance
Meticulous and Rigorous Incoming Material Inspection: Exceeding Industry Standards
Every single piece of raw material that enters our highly-secured warehouse is subjected to an exhaustive and stringent evaluation process, setting a gold standard in quality assurance. This meticulous approach entails an in-depth analysis of the chemical composition and a comprehensive examination of physical properties. Our unwavering dedication to excellence mandates that each supplier provides a Certificate of Origin, accompanied by a stamped Declaration of Conformity. This ensures that only the most superior materials are selected for use in our high-precision medical machining services. Such rigorous authentication guarantees the integrity and purity of materials, steadfastly adhering to our consistently high standards.
Unyielding In-Process Quality Control: Pursuing Perfection
Throughout the intricate machining process, each component is meticulously scrutinized to verify that its dimensions and tolerances align with our exacting specifications. This diligent and continual inspection protocol proactively intercepts potential defects, preventing any non-conforming parts from advancing further. Through this vigilant approach, we significantly reduce the risk of producing large quantities of substandard goods, thereby ensuring superior quality is maintained at every phase of production.
Proactive and Comprehensive First Article Inspection (FAI): A Preventive Framework for Excellence
Our First Article Inspection (FAI) serves as the cornerstone of our strategy, adeptly identifying and resolving potential production challenges right from the onset. This proactive approach ensures that issues are prevented from escalating into mass production. This comprehensive and precise FAI process is crucial for minimizing quality risks, ensuring that our products consistently 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 Quality
Before any product departs from our facility, it undergoes a detailed and meticulous final inspection process. This rigorous evaluation covers dimensions, visual appearance, and performance, alongside any customer-specific requirements. This extensive inspection is a testament to our relentless commitment to quality, ensuring that every part dispatched meets our exacting standards, delivering only the highest quality products to our esteemed and valued customers.
Packaging & Shipping
Company Profile
Since its illustrious inception in 2009, building upon its founding vision from 2002, Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd. has passionately dedicated itself to mastering the art and science of high-precision component machining. Over the past two decades, driven by an unwavering commitment to innovation, we have emerged as true trailblazers in the realm of precision engineering. Through relentless technical research, we have established ourselves as industry pioneers, setting benchmarks of excellence that others aspire to. Every step of our journey has been marked by a steadfast dedication to pushing the boundaries of what is possible, ensuring our position at the forefront of the industry. We have amassed an unrivaled wealth of technical expertise, positioning ourselves as market leaders with a legendary reputation for excellence. Our unmatched prowess in precision medical machining services consistently achieves the most stringent tolerances and impeccable surface finishes. This sterling capability places us as the preferred choice in the medical sector, where our precision and reliability are both trusted and highly valued by our discerning clients.
With four strategically positioned production bases, in the bustling centers of Shenzhen and Guiyang, and powered by an ambitious workforce of over 400 highly skilled employees, Donghui has meticulously crafted a robust, vertically integrated industry chain. This chain seamlessly intertwines research and development, production, and delivery, ensuring that we consistently meet and exceed the diverse needs of our clientele with exceptional efficiency and unparalleled quality. Our state-of-the-art facilities are expertly equipped to undertake the most intricate and demanding machining tasks, cementing our prestigious reputation for excellence and innovation. Our ability to transform visionary ideas into tangible realities sets us apart, leading to enduring success and client satisfaction.
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)