Product application
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., our relentless pursuit of excellence manifests in our unwavering commitment to masterful craftsmanship and the intricate science at the core of manufacturing. Our dedication ensures that each piece we produce is a masterpiece of precision engineering, reflecting our exceptional standards. Our unparalleled expertise illuminates our path through the esteemed realm of superior component manufacturing, steering with unmatched skill and finesse, and cementing our position as frontrunners in the industry. As trailblazers of innovation, we set the standard in crafting and delivering state-of-the-art intelligent automation equipment. Our advanced solutions seamlessly integrate across diverse industries, addressing extensive needs in numerous applications, including:
- Medical and Biotech: Offering meticulously engineered, ultra-high-precision components and pioneering solutions for the next wave of medical devices, ensuring unmatched precision and reliability.
- Semiconductors: Elevating chip production and associated equipment with indispensable components that are crucial and irreplaceable, propelling advancements in semiconductor technology.
- New Energy: Contributing significantly to the groundbreaking and sustainable evolution of next-generation energy equipment, fostering eco-friendly innovation and progress.
- Automotive: Supplying vital components that transform the automotive sector, supporting the advancement of smart and electric vehicles, and pushing the boundaries of innovation.
Main Products
- Exquisitely crafted, non-standard customized components cater to critical industries such as medical, automation, semiconductor, and automotive sectors, delivering unparalleled excellence and precision.
Why choose us
Core Advantages
- A Fleet of Excellence: A Benchmark of Industrial Prowess Our operations feature an extraordinary assembly of over 300 of the industry's most advanced machinery units, marking us as a leader in innovation and adaptability. This extensive and diverse array of equipment ensures we are equipped to deliver state-of-the-art solutions, maintaining our stronghold at the forefront of technological advancement. These Top-Tier Branded machinery units are the cornerstone of our precision-focused manufacturing excellence. Empowered by these superior machines, our mastery of complex and rigorous machining demands spans a vast spectrum of industries, achieving exceptional precision and efficiency. Our expansive capabilities ensure unwavering adherence to the highest quality standards while offering bespoke customization, meticulously crafted to meet the distinct preferences of our esteemed clientele.
- With an illustrious 20-year legacy, we draw from a rich reservoir of manufacturing experience, seamlessly intertwined with considerable technical expertise and process acumen, guaranteeing unparalleled quality and trailblazing innovation. This enduring proficiency empowers us to consistently deliver exemplary products that not only meet but surpass expectations, setting new industry standards.
State-of-the-Art Production Equipment: Cutting-Edge Technology for Unmatched Quality
High-Precision Inspection Equipment: Ensuring Flawless Accuracy and Consistency
Quality Ensurance
Meticulously Rigorous Incoming Material Inspection: Elevating Industry Standards with Unprecedented Precision
Within the secured confines of our warehouse, every raw material embarks on a comprehensive evaluation journey, setting the benchmark in quality assurance. Our fastidious methodology dives deeply into chemical composition analyses and exhaustive examinations of physical properties. Excellence is guaranteed as each supplier is mandated to provide a Certificate of Origin along with a stamped Declaration of Conformity, ensuring that only the finest materials are employed in our high-precision medical machining services. This stringent authentication process fortifies material integrity and purity, consistently aligning with our exceptionally high standards.
Inflexible In-Process Quality Control: Relentlessly Pursuing Perfection with Unyielding Vigilance
Throughout the sophisticated machining process, each component is subjected to meticulous examination to ensure dimensional and tolerance conformance with our stringent specifications. This continuous inspection protocol proactively identifies potential defects, effectively preventing non-conforming parts from proceeding. By maintaining unwavering vigilance, we significantly mitigate the risk of substandard goods, ensuring superior quality at every stage of production.
Proactive and Comprehensive First Article Inspection (FAI): A Preventive Framework for Assured Excellence and Precision
Our First Article Inspection (FAI) represents the cornerstone of our manufacturing strategy, adeptly identifying and addressing potential production issues at their inception. This proactive approach effectively averts problems from escalating into large-scale production challenges. Our extensive FAI process is critical for minimizing quality risks, ensuring our products consistently achieve the highest standards. This reflects our steadfast dedication to excellence throughout the entire production cycle.
Thorough and Detailed Comprehensive Final Inspection: The Ultimate Custodian of Quality and Precision
Before any product departs our facility, it is subjected to a meticulous final inspection regime. This rigorous evaluation spans dimensions, visual aesthetics, performance, and compliance with customer-specific requirements. Our comprehensive inspection underscores our unwavering dedication to quality, ensuring each dispatched part adheres to our rigorous standards, delivering only the pinnacle of quality products to our esteemed and valued customers.
Packaging & Shipping
Company Profile
Founded in the illustrious year of 2009, yet with roots stretching back to 2002, Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd. has emerged as a beacon of precision and innovation in the realm of high-precision component machining. Our exceptional journey, fueled by an unwavering passion and dedication to the art and science of engineering, spans over two extraordinary decades. We have masterfully established our niche as vanguards in precision engineering, zealously propelling technical research and setting industry benchmarks of unmatched brilliance. We have cultivated an extraordinary depth of technical expertise, distinguishing us as market leaders with a prestigious reputation for remarkable excellence. Our unparalleled proficiency in precision medical machining services consistently adheres to the most stringent tolerances, delivering impeccable surface finishes. This firmly establishes us as the premier choice in the medical sector, where our precision and reliability continue to earn unwavering trust and admiration from our esteemed clientele.
With four strategically positioned production bases, nestled in the bustling and vibrant hubs of Shenzhen and Guiyang, supported by a robust team of over 400 exceptionally skilled employees, Donghui has meticulously cultivated a comprehensive, vertically integrated industry chain. This seamlessly unites research and development, elite production, and impeccable delivery, ensuring that we meet and exceed the diverse needs of our clients with remarkable efficiency and unparalleled quality. Our cutting-edge facilities are fully equipped to tackle the most intricate and challenging machining tasks, fortifying our esteemed reputation for excellence and trailblazing 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)