Product application
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., we are not just fulfilling a duty; we are passionately driven by our admiration for the intricate artistry and scientific precision inherent in precision manufacturing. Our unparalleled expertise stands as a beacon in the world of premium component fabrication, guiding the way towards exceptional precision and unmatched craftsmanship. We are trailblazers in the development and manufacture of innovative intelligent automation equipment. Our state-of-the-art solutions span a vast array of industries and meet diverse application needs, including:
- Medical and Biotech: Supplying meticulously crafted high-precision components and pioneering solutions for cutting-edge medical devices, ensuring the highest quality standards are met.
- Semiconductors: Supporting the semiconductor industry by providing essential core components indispensable for chip production and associated equipment, driving industry success.
- New Energy: Actively participating in the dynamic and sustainable development of innovative energy equipment, promoting eco-friendly technological advancements.
- Automotive: Delivering crucial components that stimulate innovation in the automotive industry, supporting the advancement of smart and electric vehicles.
Main Products
- We excel in producing non-standard customized components, extensively catering to the medical, automation, semiconductor, and automotive industries, guaranteeing unparalleled precision and superior quality.
Why choose us
Core Advantages
- A Fleet of Excellence Our operations proudly showcase an extraordinary assortment of over 300 renowned machines, empowering us to masterfully conquer a comprehensive spectrum of equipment categories. This capability enables us to adeptly meet the intricate machining demands of diverse industries with unmatched precision and exceptional efficiency, ensuring superior results.
- With a rich history spanning two decades, we harness extensive production experience combined with substantial technical and process expertise, which guarantees exceptional quality and forward-thinking innovation. This dedication distinguishes us as pioneers in the realm of precision engineering, always a step ahead in delivering excellence.
State-of-the-Art Production Equipment
High-Precision Inspection Equipment
Quality Ensurance
Outstanding Incoming Material Assessment
Each raw material that enters our state-of-the-art warehouse is subjected to an exhaustive and rigorous examination process. Our detailed analyses include scrutinizing the chemical composition, along with a comprehensive inspection of the physical properties. We maintain an unwavering commitment to quality by requiring every supplier to furnish a Certificate of Origin and a stamped Declaration of Conformity. This meticulous process ensures that only the finest materials are chosen for our high-precision medical machining services. Our rigorous authentication process guarantees that these materials meet the highest standards of integrity and purity, aligning seamlessly with our steadfast commitment to quality excellence.
Comprehensive In-Process Quality Supervision
Within our advanced and precise machining operations, every component is carefully scrutinized to ensure its dimensions and tolerances not only meet but exceed our stringent specifications. Our vigilant and ongoing inspection protocol is strategically devised to intercept potential defects early, preventing non-conforming parts from advancing to subsequent stages. This proactive approach is pivotal in minimizing the risk of substandard goods, ensuring exceptional quality at each phase of production, and maintaining excellence throughout the entire process.
Targeted First Article Inspection (FAI)
Our First Article Inspection (FAI) process is a foundational strategy vital for identifying and resolving potential production challenges at the earliest stage. This forward-thinking approach prevents issues from escalating into mass production. The detailed and precise nature of our FAI process is crucial in minimizing quality risks, ensuring our products consistently reach the apex of quality standards. This unwavering dedication to excellence is evident in every aspect of the production cycle, ensuring we meet and exceed the highest quality benchmarks.
Thorough and Comprehensive Final Inspection
Before any product departs from our facility, it undergoes a meticulous and exhaustive final inspection. This process rigorously assesses dimensions, visual integrity, performance, and any customer-specific requirements. Our comprehensive inspection process stands as a testament to our relentless dedication to quality, ensuring every part dispatched from our facility meets our exacting standards. We are unwavering in our mission to deliver 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 a wealth of technical expertise, earning a stellar market reputation that sets us apart as a leader in the industry. Our capabilities in precision medical machining services are unmatched, consistently achieving incredibly tight tolerances and impeccable surface finishes, making us the preferred choice in the medical sector.
With four strategically located production bases in the bustling hubs of Shenzhen and Guiyang, powered by a dedicated workforce of over 400 skilled employees, Donghui has crafted a robust and vertically integrated industry chain. This chain effortlessly weaves together research and development, production, and delivery, ensuring that we meet and exceed the diverse needs of our customers with outstanding efficiency and unrivaled quality. Our state-of-the-art facilities are equipped to handle the most intricate and demanding machining tasks, maintaining our 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)