Product application
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., our passion for excellence is not merely a duty but a relentless pursuit to master the sophisticated artistry and intricate science of advanced manufacturing. We are committed to setting new standards in precision and quality. Our unrivaled expertise is a lighthouse in the realm of precision, steering us through the elite sphere of superior component manufacturing, ensuring our products stand out in their excellence and reliability. As pioneers of innovation, we set the benchmark in the creation and production of revolutionary intelligent automation equipment. Our state-of-the-art solutions are designed to seamlessly integrate across a vast spectrum of industries, catering to diverse applications such as:
- Medical and Biotech: Providing meticulously engineered, high-precision components and groundbreaking solutions tailored for the future of medical devices, enhancing their performance and reliability.
- Semiconductors: Transforming chip production and related equipment with essential core components that are crucial and irreplaceable for industry advancement.
- New Energy: Playing a critical role in the innovative and sustainable development of the latest energy equipment, driving the future of clean and efficient energy solutions.
- Automotive: Providing essential components that fuel innovation in the automotive industry, propelling the advancement of smart and electric vehicles to new heights.
Main Products
- Masterfully crafted, non-standard customized components serve critical sectors such as medical, automation, semiconductor, and automotive industries, delivering unmatched excellence and reliability.
Why choose us
Core Advantages
- A Fleet of Excellence: A Benchmark of Industrial Prowess Our operations are fortified by an exceptional fleet of over 300 of the industry's most advanced machinery units. This ensures we possess a comprehensive catalog of equipment categories, empowering us to stay at the forefront of innovation and adaptability. Such a diverse and cutting-edge collection of machinery allows us to meet and exceed the ever-evolving demands of the industry, thereby solidifying our position as leaders in precision and excellence. These top-tier branded machinery units serve as the cornerstone of our precision-focused manufacturing, forming the bedrock of our operations. This robust foundation enables us to skillfully address the multifaceted and demanding machining requirements across a wide array of industries. We achieve remarkable precision and efficiency, ensuring adherence to the highest quality standards. Our expansive capabilities allow for bespoke customization, meticulously tailored to meet the unique needs of our esteemed clients, ensuring their satisfaction and success.
- With a distinguished 20-year legacy, we wield an abundant reservoir of manufacturing experience, seamlessly blended with significant technical expertise and process strengths. This assures superior quality and pioneering innovation. Our enduring expertise empowers us to consistently deliver extraordinary products that exceed expectations and redefine industry standards, setting a new benchmark for excellence in the field.
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 Norms for Absolute Confidence
Every single piece of raw material that crosses the threshold of our highly-secured warehouse is subjected to an exhaustive and stringent evaluation process, a gold standard in quality assurance. This meticulous approach encompasses an in-depth analysis of the chemical composition and a comprehensive examination of physical properties. Our unwavering dedication to excellence mandates that every supplier provides a Certificate of Origin and a stamped Declaration of Conformity. This ensures that only the most superior materials are chosen for 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: An Unyielding Pursuit of 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. Our vigilant approach significantly reduces the risk of producing large quantities of substandard goods, ensuring superior quality is maintained at every phase of production.
Proactive and Comprehensive First Article Inspection (FAI): A Preventive Strategy for Unmatched Excellence
Our First Article Inspection (FAI) serves as the cornerstone of our strategy, adeptly identifying and resolving potential production challenges from the outset. This proactive measure ensures that issues are addressed before escalating into mass production. This comprehensive and precise FAI process is pivotal in minimizing quality risks, consistently achieving the highest standards and reflecting our unwavering dedication to excellence throughout the entire production cycle.
Thorough and Detailed Comprehensive Final Inspection: The Ultimate Quality Guardian
Before any product departs from our facility, it undergoes a detailed and meticulous final inspection process. This rigorous evaluation encompasses dimensions, visual appearance, performance, and any customer-specific requirements. This extensive inspection underscores our relentless commitment to quality, ensuring that every part dispatched meets our exacting standards and delivers 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. With an unwavering commitment to innovation over the past two decades, we have emerged as trailblazers in the realm of precision engineering. Through relentless technical research, we have established ourselves as industry pioneers, setting benchmarks of excellence. We have amassed an unrivaled wealth of technical expertise, positioning ourselves as market leaders with a stellar reputation for excellence. Our unmatched prowess in precision medical machining services consistently achieves the most exacting tolerances and flawless surface finishes. This places us as the preferred choice in the medical sector, where our precision and reliability are trusted and valued.
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.
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)