Product application
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., our commitment is not merely a duty; it is fueled by an ardent passion for the refined artistry and intricate science of precision manufacturing. Our dedication is palpable, reflected in our pursuit of excellence and innovation. Our unparalleled expertise is a beacon in the high-end component fabrication arena, leading the way to remarkable precision and accuracy. Our knowledge and skills set the standard for others to follow. We are at the forefront of innovation, creating and producing revolutionary intelligent automation equipment. Our state-of-the-art solutions serve a plethora of industries, meeting a variety of needs across different applications, including:
- Medical and Biotech: We deliver meticulously engineered, high-precision components and groundbreaking solutions for cutting-edge medical devices, consistently maintaining the highest quality standards.
- Semiconductors: We empower the semiconductor industry, providing essential core components that are critical for chip production and related equipment, ensuring industry success.
- New Energy: We engage in the dynamic, sustainable progression of innovative energy equipment, championing eco-friendly technological advancements for a better tomorrow.
- Automotive: We supply key components that drive innovation in the automotive sector, supporting the evolution of intelligent and electric vehicles for the future.
Main Products
- Our specialization lies in non-standard, customized components, diligently serving the medical, automation, semiconductor, and automotive industries. We ensure unparalleled precision and superior quality, meeting the highest standards in every product we deliver.
Why choose us
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. With this impressive capability, we artfully fulfill the intricate machining needs of diverse industries, offering unparalleled precision, unmatched efficiency, and exceptional quality.
- With a rich history spanning two decades, we leverage vast production experience, combined with significant technical and process prowess. This ensures guaranteed exceptional quality and forward-thinking innovation, positioning us as pioneers in the realm of precision engineering.
State-of-the-Art Production Equipment
High-Precision Inspection Equipment
Quality Ensurance
Exemplary Incoming Material Examination
Each raw material entering our warehouse undergoes a comprehensive and rigorous examination process. We conduct meticulous analyses that include assessing the chemical composition and a detailed inspection of the physical properties. Our unwavering dedication to quality is reflected in our requirement for every supplier to provide a Certificate of Origin and a stamped Declaration of Conformity. This ensures that only the highest-grade materials are selected for our high-precision medical machining services. Through our stringent authentication process, we ensure these materials meet the pinnacle of integrity and purity, perfectly aligning with our unwavering commitment to quality.
Intensive In-Process Quality Assurance
Within our intricate and precise machining operations, each component is meticulously examined to ensure its dimensions and tolerances not only meet but exceed our stringent specifications. Our diligent and continuous inspection protocol is strategically crafted to intercept potential defects early, preventing non-conforming parts from advancing to subsequent stages. This vigilant methodology is crucial in reducing the risk of substandard goods, guaranteeing superior quality at every production phase, and maintaining excellence throughout the entire process.
Strategic First Article Inspection (FAI)
Our First Article Inspection (FAI) process serves as a foundational strategy crucial for identifying and addressing potential production challenges at an early stage. This proactive approach halts issues before they escalate into mass production. The comprehensive and precise nature of our FAI process is essential in minimizing quality risks, ensuring our products consistently reach the zenith of standards. This dedication to excellence permeates every aspect of the production cycle, ensuring that we consistently meet and exceed the highest quality benchmarks.
Meticulous Comprehensive Final Inspection
Before any product leaves our facility, it undergoes a meticulous and exhaustive final inspection. This process rigorously assesses dimensions, visual appearance, performance, and any customer-specific requirements. Our meticulous inspection process is a testament to our relentless commitment to quality, ensuring that every part dispatched from our facility meets our exacting standards. We are steadfast in delivering only the highest quality products to our valued customers, upholding our reputation for excellence and reliability.
Packaging & Shipping
Company Profile
Since its inception in 2009, following its founding roots in 2002, Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd. has swiftly risen as a beacon of unparalleled expertise in high-precision basic component machining. With an unwavering commitment to groundbreaking innovation over the past two decades, we have ventured deeply into technical research, cementing our status as trailblazers in precision engineering. We have accumulated an extensive repository of technical expertise, garnering an exemplary market reputation that distinguishes us as a preeminent leader within the industry. Our capabilities in precision medical machining services are second to none, consistently achieving extraordinarily tight tolerances and flawless surface finishes, securing our position as the foremost choice in the medical sector.
With four strategically positioned production bases in the dynamic hubs of Shenzhen and Guiyang, powered by a dedicated workforce of over 400 highly skilled employees, Donghui has masterfully crafted a robust and vertically integrated industry chain. This chain seamlessly integrates research and development, production, and delivery, ensuring that we not only meet but exceed the varied needs of our customers with exceptional efficiency and unparalleled quality. Our cutting-edge facilities are equipped to tackle the most intricate and demanding machining tasks, sustaining our 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)