Product application
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., our commitment transcends mere duty; it embodies a passionate pursuit of the exquisite artistry and meticulous science that defines precision manufacturing. With an unwavering dedication to flawlessness, we transform every component into a masterpiece, elevating it to the pinnacle of craftsmanship and excellence. Our unmatched expertise radiates brilliantly in the domain of high-end component fabrication, pioneering a path toward unparalleled precision and extraordinary excellence. At the cutting edge of innovation, we specialize in the creation of groundbreaking intelligent automation equipment. Our state-of-the-art solutions expertly cater to a wide range of industries, precisely addressing diverse application needs, including:
- Medical and Biotech: Revolutionizing Healthcare with Precision: Delivering meticulously crafted, high-precision components and innovative solutions for revolutionary medical devices, steadfastly upholding the premium quality standards that are synonymous with our brand.
- Semiconductors: Driving Technological Breakthroughs: Supporting the semiconductor industry with indispensable core components vital for chip production and related equipment, ensuring seamless operations and fostering relentless innovation.
- New Energy: Pioneering the Path to Sustainable Innovation: Actively engaging in the sustainable advancement of innovative energy equipment, propelling eco-friendly technological innovations forward with momentum.
- Automotive: Energizing the Future of Mobility: Providing essential components that drive innovation in the automotive industry, playing a pivotal role in the evolution of smart and electric vehicles.
Main Products: Expertise in Customization
- We excel in crafting bespoke, non-standard customized components, extensively serving the medical, automation, semiconductor, and automotive industries with unmatched precision and superior quality.
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 remarkable capability allows us to expertly fulfill the intricate machining needs of diverse industries, delivering precision and efficiency that are second to none.
- With a legacy of excellence that spans over two decades, we leverage 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.
State-of-the-Art Production Equipment
High-Precision Inspection Equipment
Quality Ensurance
Exceptional Incoming Material Appraisal
Every raw material entering our distinguished facility undergoes a comprehensive, stringent evaluation to meet our extraordinary quality standards. Our meticulous evaluations involve in-depth analysis of chemical composition and detailed inspection of physical properties. Upholding our commitment to excellence, we require suppliers to provide a Certificate of Origin and a duly stamped Declaration of Conformity, ensuring only materials of exceptional integrity and purity are chosen for our precision-driven medical machining. This rigorous protocol aligns seamlessly with our dedication to delivering unmatchable quality, echoing our promise of perfection.
Meticulous In-Process Quality Control
In our advanced machining operations, every component undergoes meticulous scrutiny to ensure dimensions and tolerances exceed our strict specifications. Our diligent, continuous inspection protocol effectively identifies potential defects early, preventing non-conforming parts from advancing further. This vigilant approach is vital in reducing the risk of substandard goods, ensuring superior quality at each stage and maintaining excellence throughout the process, demonstrating our unwavering commitment to quality.
Strategic and Proactive First Article Inspection (FAI)
Our First Article Inspection (FAI) is a crucial strategic initiative pivotal for early identification and resolution of potential production issues. This proactive methodology ensures challenges are efficiently addressed before escalating into significant production concerns. The comprehensive precision of our FAI reduces quality risks, ensuring products consistently meet top industry standards. This commitment to excellence pervades the entire production cycle, ensuring we consistently surpass even the most stringent quality benchmarks, solidifying our reputation for superior quality.
Thorough and Exhaustive Final Inspection
Before products leave our esteemed facility, they undergo exhaustive, rigorous final inspection. This process meticulously evaluates dimensions, appearance, performance, and customer-specific requirements. Our thorough inspections epitomize our relentless dedication to quality, ensuring every part dispatched adheres to our exacting standards. We are steadfast in our mission to deliver only the highest-caliber products to our valued customers, maintaining our sterling reputation for excellence and reliability.
Packaging & Shipping
Company Profile
Established in 2009, with a rich legacy that dates back to 2002, Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd. has blossomed into a shining beacon in the sphere of high-precision component machining. For over 20 years, our relentless pursuit of groundbreaking innovations has propelled us to the forefront of technical research, affirming our place as trailblazers in the precision engineering world. We have ascended to an extraordinary level of technical prowess that fortifies a revered market standing, marking us as undeniable leaders in the field. Our unmatched expertise in precision medical machining ensures the realization of astonishingly tight tolerances and flawless surface finishes, firmly establishing us as the premier partner for the medical industry.
With four strategically located production bases nestled in the dynamic centers of Shenzhen and Guiyang, powered by an elite team of over 400 exceptionally skilled professionals, Donghui has masterfully constructed a comprehensive and vertically integrated industry chain. This seamlessly weaves together research and development, production, and delivery, enabling us to not merely meet but consistently surpass our customers' varied requirements with exceptional efficiency and unrivaled quality. Our cutting-edge facilities are meticulously crafted to tackle the most complex and demanding machining tasks, preserving our illustrious 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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