Product application
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., our mission is not merely a duty but a passionate quest for the exquisite blend of artistry and scientific precision that defines excellence in manufacturing. Driven by an unwavering dedication to perfection, we elevate each component to new heights of craftsmanship and quality. Our unmatched expertise stands as a beacon in the high-end component fabrication sector, paving the way for superior precision and extraordinary excellence. Leading the charge in innovation, we specialize in crafting pioneering intelligent automation equipment. Our cutting-edge solutions are expertly designed to meet a wide array of industry requirements, precisely addressing applications in diverse fields, such as:
- Medical and Biotech: Transforming Healthcare with Precision: Delivering meticulously engineered, high-precision components and avant-garde solutions for revolutionary medical devices, consistently maintaining the premium quality standards that define our brand.
- Semiconductors: Catalyzing Technological Breakthroughs: Empowering the semiconductor industry with indispensable core components essential for chip production and related equipment, ensuring uninterrupted operations and fostering innovation.
- New Energy: Leading the Charge in Sustainable Innovation: Actively driving the sustainable progression of cutting-edge energy equipment, advancing eco-friendly technological innovations.
- Automotive: Energizing the Mobility of Tomorrow: Supplying essential components that stimulate innovation in the automotive sector, playing a pivotal role in the evolution of smart and electric vehicles.
Main Products: Mastery in Customization
- We are leaders in the creation of bespoke, non-standard customized components, extensively supporting the medical, automation, semiconductor, and automotive industries with unmatched precision and superior craftsmanship.
Why choose us
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Core Advantages
- A Fleet of Excellence Our operations proudly showcase an extraordinary assortment of over 300 renowned machines, enabling us to masterfully address a comprehensive spectrum of equipment categories. This capability empowers us to skillfully fulfill the intricate machining needs of diverse industries with unparalleled precision and efficiency. Whether it's complex medical devices or aerospace components, our cutting-edge machinery ensures top-notch quality and performance in every project.
- With a legacy of excellence that spans over two decades, we harness our vast production expertise combined with outstanding technical prowess and process knowledge. Our unwavering commitment ensures not only superior quality but also innovative foresight, establishing us as pioneers in the field of precision engineering. Our experience is complemented by a passion for innovation, guaranteeing that every venture we undertake is a stride towards the future.
State-of-the-Art Production Equipment
High-Precision Inspection Equipment
Quality Ensurance
Exemplary Incoming Material Analysis
Every raw material stepping into our prestigious facility is subjected to a thorough and rigorous evaluation to align with our unparalleled quality standards. Our painstaking assessments include comprehensive chemical composition analysis and meticulous examination of physical properties. In our pursuit of excellence, we mandate that our suppliers provide a Certificate of Origin along with a duly verified Declaration of Conformity, guaranteeing that only immaculate materials are selected for our precision-centric medical machining. This rigorous procedure is in perfect harmony with our unwavering commitment to delivering unmatched quality, embodying our pledge of perfection.
In-Process Quality Control Excellence
Within our state-of-the-art machining operations, every component is subjected to meticulous examination to ensure dimensions and tolerances not only meet but surpass our precise specifications. Our continuous, vigilant inspection protocol efficiently unearths potential discrepancies early, preventing any non-conformity from advancing. This diligent approach is essential in mitigating risks of substandard products, guaranteeing superior quality at every stage and maintaining excellence throughout the process, reflecting our steadfast dedication to quality.
Proactive and Strategic First Article Inspection (FAI)
Our First Article Inspection (FAI) represents a vital strategic initiative that is crucial for the early detection and resolution of potential production challenges. This forward-thinking methodology ensures that hurdles are addressed efficiently before they evolve into significant production concerns. The comprehensive precision of our FAI mitigates quality risks, ensuring our products consistently meet the highest industry standards. This unwavering commitment to excellence permeates the entire production cycle, enabling us to consistently exceed even the most demanding quality benchmarks, reinforcing our reputation for superior quality.
Comprehensive and Detailed Final Inspection
Prior to departing our esteemed facility, products are subjected to a thorough and rigorous final inspection. This comprehensive process meticulously scrutinizes dimensions, appearance, performance, and customer-specific requirements. Our exhaustive inspections epitomize our relentless pursuit of quality, ensuring every part dispatched meets our stringent standards. We remain devoted to delivering only the highest-caliber products to our esteemed customers, preserving our outstanding reputation for excellence and reliability.
Packaging & Shipping
Company Profile
Founded in 2009, and with roots tracing back to 2002, Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd. stands as a prominent leader in high-precision component machining. For over two decades, our unwavering dedication to pioneering advancements has propelled us to the apex of technical research, affirming our role as innovators and vanguards in the precision engineering domain. We have achieved an unparalleled level of technical expertise that not only solidifies our esteemed market position but also underscores our role as indisputable leaders in the field. Our superior proficiency in precision medical machining guarantees the achievement of extremely tight tolerances and impeccable surface finishes, positioning us as the foremost choice for the medical industry.
With four strategically positioned production bases situated in the vibrant locales of Shenzhen and Guiyang, supported by a distinguished team of over 400 highly skilled professionals, Donghui has expertly built a comprehensive and vertically integrated industry chain. This harmoniously blends research and development, production, and delivery, enabling us to not just meet but consistently exceed our customers' diverse demands with remarkable efficiency and unparalleled quality. Our state-of-the-art facilities are meticulously designed to tackle the most intricate and challenging machining tasks, upholding our prestigious reputation for excellence and innovative leadership.
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)
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