Product application
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., we pride ourselves on being a beacon of precision manufacturing, where artistry intertwines seamlessly with innovation. Our unyielding dedication to excellence is reflected in every piece we craft, showcasing immaculate perfection. By combining unrivaled craftsmanship with state-of-the-art technology, we distinguish ourselves in the marketplace, ensuring each meticulously created component delivers unprecedented quality. Our unrivaled mastery in precision engineering sets an industry benchmark in the production of components. With exceptional skill and sophisticated finesse, we guarantee excellence throughout every facet of our craft, establishing our position as industry leaders. As trailblazers of innovation, we set the gold standard by designing and delivering pioneering intelligent automation equipment. Our cutting-edge solutions integrate smoothly across a variety of sectors, skillfully meeting the unique demands of diverse applications, including:
- Medical and BiotechOur flawlessly engineered, ultra-high-precision components and transformative solutions are custom-designed for the forefront of advanced medical technologies, establishing new milestones in the industry.
- SemiconductorsWe enhance chip manufacturing and related apparatus by supplying indispensable, critical components that drive extraordinary advancements and boost efficiency within the semiconductor sector.
- New EnergyWe are instrumental in driving the innovative and sustainable growth of next-generation energy equipment, contributing significantly to the future landscape of energy solutions.
- AutomotiveWe provide essential components that spur innovation within the automotive industry, advancing the evolution of intelligent and electric vehicles, thereby shaping the future of mobility.
Main Products
- Our expertly crafted, non-standard customized components epitomize excellence. Catering to critical sectors such as medical, automation, semiconductor, and automotive industries, we guarantee unmatched precision and superior quality that endure the test of time.
Why choose us
Core Advantages
- A Fleet of Excellence: A Benchmark of Industrial Prowess Our operations are fueled by a remarkable fleet exceeding 300 of the industry's most cutting-edge machinery units. This comprehensive and advanced collection ensures we remain leaders in innovation and adaptability. By consistently delivering groundbreaking solutions, we set the industry's standard for excellence, always striving for unparalleled precision and supreme quality. These Top-Tier Branded Our state-of-the-art machinery units are the backbone of our precision-focused manufacturing process, forming the essential framework that supports our stringent production standards. Utilizing these innovative tools, we continuously refine our manufacturing techniques to consistently achieve outstanding results. By leveraging our superior machines, we adeptly handle complex and challenging machining requirements across various industries, achieving extraordinary levels of precision and efficiency. Our vast capabilities ensure strict adherence to the highest quality standards while offering custom solutions that not only meet but exceed our clients' unique needs, surpassing their highest expectations.
- With a proud 20-year heritage, we draw from a wealth of manufacturing experience seamlessly integrated with vast technical expertise and process proficiency. This seamless synergy assures not only exceptional quality but also pioneering innovation. We equip ourselves to consistently deliver remarkable products that exceed expectations and set new standards of excellence within the industry.
State-of-the-Art Production Equipment: Harnessing Cutting-Edge Technology for Unmatched Quality
High-Precision Inspection Equipment: Ensuring Flawless Accuracy and Consistency
Quality Ensurance
Meticulous and Rigorous Incoming Material Inspection: In the realm of innovation and precision, we not only meet but far exceed industry expectations with our unparalleled methodologies. Leading the industry, we craft superior quality benchmarks, setting revolutionary standards at every phase of production with unmatched precision.
Every raw material entering our state-of-the-art warehouse is subjected to rigorous evaluation, setting a new benchmark in quality assurance. Our exhaustive approach includes intricate chemical composition analysis and precise physical property assessment. We demand our suppliers provide a Certificate of Origin along with a verified Declaration of Conformity, ensuring only premium materials are utilized in our cutting-edge CNC machining services. This meticulous validation process safeguards material integrity and purity, perfectly aligning with our unwavering commitment to superior quality.
Unyielding In-Process Quality Control: Our relentless vigilance and meticulous attention to every detail fuel our pursuit of perfection with unwavering dedication and precision.
During the intricate machining process, every component is subjected to meticulous examination to ensure dimensions and tolerances precisely align with our stringent specifications. This ongoing inspection protocol is vital for proactively identifying and intercepting potential defects, preventing the progression of any non-conforming parts. Through this diligent strategy, we significantly reduce the risk of producing substandard goods, consistently ensuring exceptional quality is upheld at every production stage.
Proactive and Comprehensive First Article Inspection (FAI): Our preventive framework is the cornerstone of immaculate excellence and unparalleled precision, ensuring flawless production.
Our First Article Inspection (FAI) process forms the foundation of our quality strategy, expertly identifying and resolving potential production challenges from the onset. This proactive approach ensures issues are addressed before escalating into mass production obstacles. This comprehensive FAI process is essential in minimizing quality risks, ensuring our products consistently achieve the highest standards, embodying our unwavering commitment to excellence at every stage of production.
Thorough and Detailed Comprehensive Final Inspection: The ultimate safeguard of exceptional quality and precision, ensuring every product meets our high standards.
Before any product leaves our facility, it undergoes a thorough and comprehensive final inspection. This rigorous evaluation encompasses dimensions, visual appeal, performance, and customer-specific requirements. This meticulous inspection process highlights our steadfast dedication to quality, ensuring every part delivered meets our exacting standards, thereby providing our esteemed customers with products of the highest quality.
Packaging & Shipping
Company Profile
Established in the distinguished year of 2009, with roots dating back to 2002, Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd. stands as a luminary in the sophisticated realm of high-precision component machining. Our illustrious journey, fueled by a deep-seated passion for the intricate art and rigorous science of engineering, spans over two decades of relentless innovation and masterful precision. We have deftly etched our place as trailblazers in precision engineering, continuously advancing the frontiers of technical research and establishing groundbreaking benchmarks within the industry. We have meticulously nurtured an exceptional caliber of technical acumen, positioning ourselves as market vanguards with a sterling reputation for unparalleled excellence. Our unrivaled expertise in precision medical machining services consistently meets the most exacting tolerances, delivering flawless surface finishes that cement our status as the preeminent choice in the medical sector, where our precision and steadfast reliability continue to earn unwavering trust and esteem.
With four strategically located production bases, nestled in the dynamic and bustling centers of Shenzhen and Guiyang, and backed by an impressive team of over 400 highly skilled professionals, Donghui has intricately developed a comprehensive, vertically integrated industry chain that seamlessly links cutting-edge research and development, superior production, and impeccable delivery. This ensures we consistently meet and surpass the diverse needs of our clients with extraordinary efficiency and unmatched quality. Our state-of-the-art facilities are fully equipped to undertake the most complex and demanding machining tasks, reinforcing our esteemed reputation for excellence and pioneering 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)