Product application
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., we are not just fulfilling a duty; we are driven by a passionate enthusiasm for the art and science of precision manufacturing. Our commitment to crafting excellence is unparalleled. Our unrivaled expertise is a beacon in the world of high-end component manufacturing, lighting the way to unmatched precision and excellence. As leaders in developing and producing revolutionary intelligent automation equipment, we offer state-of-the-art solutions across various industries, adeptly addressing a wide array of applications, including:
- Medical and Biotech: Creating meticulously engineered high-precision components and breakthrough solutions for cutting-edge medical devices, ensuring the highest quality standards are met.
- Semiconductors: Enhancing the semiconductor industry's success by providing essential core components that are critical to chip production and related equipment.
- New Energy: Actively participating in the dynamic and sustainable development of innovative energy equipment, advancing eco-friendly technology.
- Automotive: Supplying key components that drive innovation in the automotive industry, supporting the progress of smart and electric vehicles.
Main Products
- We specialize in providing non-standard customized components that serve the medical, automation, semiconductor, and automotive industries, ensuring unmatched precision and exceptional quality.
Why choose us
Core Advantages
- A Fleet of Excellence Our operations proudly showcase an extraordinary array of more than 300 renowned machines, empowering us to expertly navigate a broad range of equipment categories. This sophisticated capability enables us to adeptly address the complex machining demands of various industries, delivering unmatched precision and efficiency.
- With a rich history spanning two decades, we harness immense production expertise coupled with extensive technical and process mastery. This formidable combination ensures exceptional quality and visionary innovation, distinguishing us as trailblazers in the field of precision engineering.
State-of-the-Art Production Equipment
High-Precision Inspection Equipment
Quality Ensurance
Superior Incoming Material Inspection
Every raw material that enters our warehouse undergoes a comprehensive and meticulous inspection. This exhaustive process includes analyzing chemical compositions and thoroughly inspecting physical properties. Our unwavering devotion to quality requires every supplier to provide a Certificate of Origin and a stamped Declaration of Conformity. This ensures that only the most superior materials are chosen for our high-precision medical machining services. Our rigorous authentication process guarantees these materials meet the highest standards of integrity and purity, perfectly aligning with our steadfast commitment to excellence in quality.
Comprehensive In-Process Quality Assurance
Throughout our intricate machining operations, each component is meticulously examined to ensure its dimensions and tolerances not only meet but surpass our stringent specifications. Our vigilant and continuous inspection protocol is strategically designed to intercept potential defects early, thus preventing non-conforming parts from advancing to subsequent stages. This diligent approach is critical in minimizing the risk of substandard products, ensuring superior quality at each phase of production, and maintaining excellence throughout the entire process.
Proactive First Article Inspection (FAI)
Our First Article Inspection (FAI) process is a foundational strategy essential for identifying and resolving potential production challenges early in the process, thereby preventing issues from affecting mass production. The comprehensive and precise nature of our FAI is crucial in minimizing quality risks, ensuring our products consistently reach the highest standards. This dedication to excellence permeates every aspect of the production cycle, guaranteeing that we meet and exceed the most stringent quality benchmarks.
Thorough Comprehensive Final Inspection
Before any product departs from our facility, it undergoes a thorough and meticulous final inspection. This rigorous process evaluates dimensions, visual appearance, performance, and any customer-specific requirements. Our comprehensive inspection process is a testament to our relentless commitment to quality, ensuring that every part leaving our facility meets our exacting standards. We are dedicated to delivering only the highest quality products to our valued customers, upholding our esteemed 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 emerged as a bastion of expertise in high-precision basic component machining. With an unwavering dedication to innovation over the past two decades, we have delved deep into technical research, establishing ourselves as pioneers in precision engineering. We have amassed an invaluable wealth of technical expertise, earning an unparalleled market reputation that sets us apart as a vanguard in the industry. Our capabilities in precision medical machining services are simply unrivaled, consistently achieving extraordinarily tight tolerances and flawless surface finishes. This makes us the unequivocal preferred choice in the medical sector.
With four strategically positioned production bases in the dynamic cities of Shenzhen and Guiyang, fortified by a dedicated workforce of over 400 highly skilled employees, Donghui has masterfully crafted a robust and vertically integrated industry chain. This chain seamlessly intertwines research and development, production, and delivery, ensuring we meet and exceed the diverse needs of our customers with exemplary efficiency and unmatched quality. Our state-of-the-art facilities are tailor-made to handle the most intricate and demanding machining tasks, continuously upholding our sterling 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)