Product application
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., we embark on a relentless quest for excellence, driven by our profound passion for the art and science of manufacturing. Our commitment to refined craftsmanship is unwavering. Our unmatched expertise lights the way in the world of precision, guiding us through the distinguished domain of elite component manufacturing with unparalleled skill and dedication. As trailblazers in innovation, we set the gold standard by designing and producing groundbreaking intelligent automation equipment. Our cutting-edge solutions are seamlessly integrated across a broad array of industries, meeting the diverse needs of various applications with precision, such as:
- Medical and Biotech: Delivering meticulously crafted, ultra-high-precision components and pioneering solutions customized for the evolution of medical devices, setting new standards in healthcare technology.
- Semiconductors: Elevating chip production and associated equipment with essential components that are both critical and indispensable to the semiconductor industry.
- New Energy: Driving transformative changes in the innovative and sustainable development of state-of-the-art energy equipment, paving the way for a greener future.
- Automotive: Supplying critical components that fuel creativity within the automotive industry, advancing the innovation of smart and electric vehicles with unmatched precision.
Main Products
- We expertly craft non-standard, customized components that serve vital sectors such as medical, automation, semiconductor, and automotive industries, delivering excellence that is second to none.
Why choose us
Core Advantages
- A Fleet of Excellence: A Benchmark of Industrial Prowess Our operations boast an extraordinary fleet of over 300 of the industry's most sophisticated machinery units. This extensive and varied catalog of equipment categories enables us to maintain a leading position in innovation and adaptability, consistently offering cutting-edge solutions to our clients. These Top-Tier Branded Machinery units form the backbone of our precision-centric manufacturing. With our high-caliber machines, we flawlessly meet intricate and demanding machining requirements across a variety of industries. Our operations excel in delivering remarkable precision and efficiency, adhering to the most stringent quality standards. We offer bespoke customization, carefully tailored to the distinct needs of our valued clients.
- With a prestigious 20-year legacy, we draw upon a wealth of manufacturing experience, seamlessly integrated with deep technical expertise and robust process strengths. This guarantees superior quality and groundbreaking innovation, allowing us to consistently deliver extraordinary products that not only meet but exceed expectations, setting 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 with Unrivaled Precision
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., each raw material entering our secure warehouse embarks on an exhaustive journey of evaluation, redefining the industry standard in quality assurance. This meticulous approach encompasses a comprehensive analysis of chemical composition and an intensive examination of physical properties. Our unwavering commitment to excellence is underscored by a mandatory Certificate of Origin and a stamped Declaration of Conformity from every supplier, ensuring only the finest materials enrich our high-precision medical machining services. Such stringent authentication safeguards the integrity and purity of materials, steadfastly upholding our consistently elevated standards.
Unyielding Vigilance in Rigorous In-Process Quality Control: Continuously Striving for Perfection
Throughout the sophisticated machining process, each component undergoes meticulous scrutiny to guarantee its dimensions and tolerances meet our exacting specifications. This continuous inspection protocol proactively intercepts potential defects, thwarting the advancement of non-conforming parts. Through this vigilant and methodical approach, we significantly mitigate the risk of substandard production, ensuring exceptional quality is preserved at every phase of production.
Proactive and Comprehensive First Article Inspection (FAI): A Preventive Framework for Excellence and Precision
Our First Article Inspection (FAI) stands as the cornerstone of our strategic framework, expertly identifying and resolving potential production challenges at the outset. This proactive approach ensures that issues are nipped in the bud, preventing escalation into mass production. Our comprehensive FAI process is pivotal in minimizing quality risks, consistently elevating our products to the pinnacle of standards, and reflecting our unwavering dedication to excellence throughout the production cycle.
Thorough and Detailed Comprehensive Final Inspection: The Ultimate Guardian of Quality and Precision
Before any product leaves our facility, it undergoes a meticulous final inspection process, encompassing dimensions, visual appearance, and performance, while also addressing customer-specific requirements. This extensive inspection process is a testament to our relentless pursuit of quality, ensuring every part dispatched meets our exacting standards. We are committed to delivering only the highest quality products to our esteemed and valued customers, cementing our reputation for excellence.
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 unwavering dedication to engineering's art and science, 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 unmatched 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, powered by an inspiring workforce of over 400 highly skilled employees, Donghui has meticulously developed a robust, 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)