Product application
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., our passionate pursuit of perfection is reflected in our unwavering dedication to mastering the sophisticated craftsmanship and intricate science that define manufacturing excellence. Our unrivaled expertise shines brightly in the realm of precision, guiding us with unmatched skill through the prestigious domain of superior component manufacturing. As trailblazers of innovation, we set the gold standard in the creation and delivery of revolutionary intelligent automation equipment. Our cutting-edge solutions effortlessly integrate across a multitude of industries, catering to diverse needs in various applications, including:
- Medical and Biotech: Providing meticulously engineered, ultra-high-precision components and pioneering solutions crafted for the future of medical technology.
- Semiconductors: Enhancing chip production and related equipment with crucial components that are indispensable and game-changing.
- New Energy: Making a vital contribution to the innovative, sustainable growth of next-generation energy equipment.
- Automotive: Delivering key components that drive innovation in the automotive industry, supporting the advancement of smart and electric vehicles.
Main Products
- Meticulously crafted, our custom non-standard components excel in serving key sectors such as medical, automation, semiconductor, and automotive with an unparalleled standard of excellence.
Why choose us
Core Advantages
- A Fleet of Excellence: A Benchmark of Industrial Prowess Our operations boast an unparalleled fleet of over 300 of the industry's most sophisticated machinery units, ensuring we possess an extensive and diverse catalog of equipment categories. This expansive collection empowers us to remain at the forefront of innovation and adaptability, offering cutting-edge solutions. These Top-Tier Branded machinery units form the backbone of our precision-centric manufacturing. With our high-caliber machines, we expertly fulfill intricate and demanding machining requirements across diverse industries with remarkable precision and efficiency. Our comprehensive capabilities ensure strict adherence to the highest quality standards while offering bespoke customization, meticulously tailored to the unique needs of our esteemed clients.
- With a prestigious 20-year legacy, we harness a wealth of manufacturing experience, seamlessly integrated with substantial technical expertise and process strengths, guaranteeing superior quality and groundbreaking innovation. This enduring expertise enables us to consistently deliver extraordinary products that surpass expectations and set 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: With unparalleled precision, we consistently surpass industry norms, establishing a new benchmark in quality scrutiny.
Every raw material entering our secure warehouse undergoes an exhaustive evaluation, setting a new standard in quality assurance. Our meticulous approach involves a thorough analysis of chemical composition and a comprehensive examination of physical properties. Our unwavering commitment to excellence mandates that each supplier provides a Certificate of Origin and a stamped Declaration of Conformity, ensuring only the finest materials are integrated into our sophisticated medical machining services. This rigorous authentication guarantees material integrity and purity, perfectly aligning with our dedication to superior standards.
Rigorous In-Process Quality Control: Our relentless pursuit of perfection is driven by constant vigilance and keen attention to detail.
Throughout the intricate machining process, every component is meticulously scrutinized to ensure dimensions and tolerances align flawlessly with our exacting specifications. This ongoing inspection is pivotal in preemptively intercepting potential defects, preventing non-conforming parts from advancing. Through this vigilant strategy, we significantly reduce the risk of substandard production, guaranteeing superior quality throughout every production phase.
Proactive and Comprehensive First Article Inspection (FAI): Our preventive framework lays the foundation for unmatched precision and excellence.
Our First Article Inspection (FAI) process is the cornerstone of our quality strategy, expertly identifying and resolving potential production challenges from the outset. This proactive approach ensures issues are contained before escalating into mass production concerns. This comprehensive FAI is crucial in minimizing quality risks, ensuring our products consistently reach the pinnacle of standards, reflecting our steadfast commitment to excellence at every production stage.
Thorough and Detailed Comprehensive Final Inspection: The ultimate safeguard of unparalleled quality and precision.
Before departing our facility, every product is subject to an exhaustive final inspection. This rigorous assessment covers dimensions, visual appearance, and performance, alongside customer-specific requirements. This extensive inspection serves as a testament to our relentless commitment to quality, ensuring every part delivered meets our exacting standards, providing only the finest quality products to our esteemed customers.
Packaging & Shipping
Company Profile
Founded in the illustrious year of 2009, yet deeply rooted in a legacy stretching back to 2002, Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd. shines as a paragon of precision and innovation in the sophisticated world of high-precision component machining. Our storied journey, fueled by an unquenchable passion and steadfast dedication to engineering's art and science, spans over two remarkable decades. We have passionately carved our niche as pioneers in precision engineering, relentlessly pursuing technical research and setting industry benchmarks of unmatched excellence. We have cultivated an unparalleled depth of technical expertise, establishing ourselves as market leaders celebrated for exceptional excellence. Our supreme mastery in precision medical machining services consistently meets the most stringent tolerances and delivers impeccable surface finishes. This solidifies our standing as the premier choice in the medical sector, where our precision and reliability continue to earn unwavering trust and admiration.
With four expertly positioned production bases, in the thriving and dynamic hubs of Shenzhen and Guiyang, supported by an inspiring team of over 400 highly skilled professionals, Donghui has meticulously developed a robust, vertically integrated industry chain. This seamlessly connects research and development, top-tier production, and flawless delivery, ensuring we meet and exceed the diverse needs of our clients with remarkable efficiency and unmatched quality. Our state-of-the-art facilities are fully equipped to tackle the most complex and challenging machining tasks, reinforcing our prestigious reputation for excellence and groundbreaking 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)