Product application
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., our commitment transcends duty; it is a fervent pursuit of the exquisite artistry and meticulous science that defines precision manufacturing. With unwavering passion for flawlessness, we elevate every component to a pinnacle of craftsmanship and excellence. Our unparalleled expertise shines brightly in the realm of high-end component fabrication, blazing a trail toward unmatched precision and extraordinary excellence. At the forefront of innovation, we specialize in creating groundbreaking intelligent automation equipment. Our state-of-the-art solutions deftly cater to a spectrum of industries, precisely addressing diverse application needs, including:
- Medical and Biotech: Revolutionizing Healthcare with Precision: Supplying meticulously crafted, high-precision components and cutting-edge solutions for groundbreaking medical devices, consistently upholding the premium quality standards synonymous with our brand.
- Semiconductors: Driving Technological Breakthroughs: Supporting the semiconductor industry with essential core components critical for chip production and related equipment, ensuring seamless operations and fostering innovation.
- New Energy: Pioneering the Path to Sustainable Innovation: Actively participating in the sustainable advancement of innovative energy equipment, propelling eco-friendly technological innovations.
- Automotive: Energizing the Future of Mobility: Providing crucial components that fuel innovation in the automotive sector, playing a significant role in the progression 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 unparalleled 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 capability empowers us to skillfully fulfill the intricate machining needs of diverse industries with unparalleled precision and efficiency.
- 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.
State-of-the-Art Production Equipment
High-Precision Inspection Equipment
Quality Ensurance
Exceptional Incoming Material Evaluation
Every raw material entering our prestigious facility is subjected to a comprehensive, stringent evaluation process designed to meet our exceptional quality standards. This meticulous scrutiny involves detailed analysis of chemical composition and thorough inspection of physical properties. Committed to delivering excellence, we ensure suppliers provide a Certificate of Origin and a duly authorized Declaration of Conformity, guaranteeing that only materials of superior integrity and purity are selected for our precision-focused medical machining operations. This rigorous protocol seamlessly aligns with our dedication to delivering unparalleled quality, reinforcing our promise of perfection at every step.
Meticulous In-Process Quality Control
Within our state-of-the-art machining operations, every component is subjected to meticulous scrutiny to ensure dimensions and tolerances not only meet but exceed our stringent specifications. Our diligent, continuous inspection protocol allows us to identify potential defects early, preventing non-conforming parts from advancing. This vigilant approach is crucial in reducing the risk of substandard goods, ensuring superior quality at every stage, and upholding our unwavering dedication to excellence and quality throughout the entire process.
Strategic and Proactive First Article Inspection (FAI)
Our First Article Inspection (FAI) stands as a critical strategic initiative, vital for early identification and resolution of potential production challenges. This proactive approach ensures that any issues are efficiently addressed before they escalate into significant production concerns. The comprehensive precision of our FAI effectively reduces quality risks, ensuring our products consistently meet top-tier industry standards. This commitment to excellence pervades the entire production cycle, allowing us to consistently exceed even the most exacting quality benchmarks, thus cementing our reputation for delivering superior quality products.
Thorough and Exhaustive Final Inspection
Before any product exits our prestigious facility, it undergoes an exhaustive and rigorous final inspection process. This meticulous evaluation assesses dimensions, appearance, performance, and any customer-specific requirements. Our comprehensive inspections epitomize our relentless commitment to quality, ensuring that every part dispatched meets our exacting standards. We remain steadfast in our mission to deliver only the highest-caliber products to our valued customers, ensuring our esteemed reputation for excellence and reliability is consistently maintained.
Packaging & Shipping
Company Profile
Since 2009, with an impressive heritage reaching back to 2002, Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd. has emerged as a luminary in the realm of high-precision component machining. With over two decades of relentless innovation, we have surged to the vanguard of technical research, cementing our status as pioneers in the precision engineering sector. We have reached an extraordinary pinnacle of technical excellence that strengthens our esteemed market position, identifying us as indisputable leaders in the field. Our unparalleled precision in medical machining guarantees the achievement of extraordinarily tight tolerances and impeccable surface finishes, securing our role as the preferred partner for the medical industry.
With four strategically positioned production hubs situated in the vibrant locales of Shenzhen and Guiyang, powered by an elite force of over 400 remarkably skilled experts, Donghui has expertly developed a comprehensive and vertically integrated industry chain. This seamlessly integrates research, development, production, and distribution, enabling us to not just meet but consistently exceed our customers' diverse demands with exceptional efficiency and unparalleled quality. Our state-of-the-art facilities are meticulously designed to tackle the most intricate and demanding machining challenges, upholding our stellar 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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