Product application
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., our commitment goes beyond mere duty; it's fueled by an unyielding passion for the artful and scientifically precise craft of precision manufacturing. Our unrivaled expertise acts as a beacon in the elite world of high-end component crafting, shedding light on the path toward unparalleled precision and accuracy. We are trailblazers in creating and producing revolutionary intelligent automation equipment. Our advanced solutions are designed to address the unique needs of a wide array of industries, including but not limited to:
- Medical and Biotech: Crafting precisely engineered, high-precision components and forward-thinking solutions for cutting-edge medical devices while maintaining the utmost quality standards.
- Semiconductors: Facilitating chip production and its associated machinery by providing essential core components crucial for the industry's thriving success.
- New Energy: Actively participating in the vibrant and sustainable development of innovative energy equipment, enhancing eco-friendly technological evolution.
- Automotive: Supplying essential components that drive innovation in the automotive sector, supporting the advancement of intelligent and electric vehicles.
Main Products
- We excel in crafting non-standard custom components, widely catering to the medical, automation, semiconductor, and automotive sectors, delivering unparalleled precision and top-tier quality.
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. This capability empowers us to skillfully fulfill the intricate machining needs of diverse industries with unparalleled precision and efficiency.
- With a rich history spanning two decades, we leverage vast production experience combined with substantial technical and process prowess. This powerful combination guarantees exceptional quality and forward-thinking innovation, setting us apart as pioneers in the realm of precision engineering.
State-of-the-Art Production Equipment
High-Precision Inspection Equipment
Quality Ensurance
Exemplary Incoming Material Examination: Our First Line of Defense
Each raw material making its way into our warehouse undergoes an exhaustive and stringent examination process that leaves no stone unturned. Our meticulous analyses encompass a deep dive into the chemical composition and a thorough inspection of the physical properties. We uphold an unwavering commitment to quality, demanding every supplier furnishes a Certificate of Origin and a stamped Declaration of Conformity. This rigorous vetting ensures that only the crème de la crème of materials are selected for our high-precision medical machining services. Our rigorous authentication process guarantees these materials meet the highest standards of integrity and purity, unequivocally aligning with our steadfast commitment to excellence.
Intensive In-Process Quality Assurance: Perfection at Every Step
Within our intricate and precise machining operations, every component is meticulously scrutinized to ensure its dimensions and tolerances not only meet but exceed our exacting specifications. Our diligent and continuous inspection protocol is strategically designed to intercept potential defects early on, thereby preventing non-conforming parts from advancing to subsequent stages. This vigilant approach is pivotal in minimizing the risk of substandard goods, ensuring superior quality at each phase of production, and upholding an unwavering standard of excellence throughout the entire process.
Strategic First Article Inspection (FAI): A Proactive Approach to Perfection
Our First Article Inspection (FAI) process is a cornerstone strategy essential for identifying and resolving potential production challenges at an early stage. This proactive measure prevents issues from snowballing into mass production. The comprehensive and precise nature of our FAI process plays a crucial role in minimizing quality risks, ensuring our products consistently rise to the pinnacle of standards. This unwavering dedication to excellence infuses every element of the production cycle, guaranteeing that we consistently meet and exceed the highest quality benchmarks.
Meticulous Comprehensive Final Inspection: Ensuring Unwavering Quality
Before any product embarks on its journey from our facility, it undergoes a meticulous and comprehensive final inspection. This rigorous process evaluates dimensions, visual appearance, performance, and any customer-specific requirements with unwavering precision. Our comprehensive inspection process is a testament to our relentless commitment to quality, ensuring that every part dispatched from our facility meets our exacting standards. We remain steadfast in delivering only the highest quality products to our valued customers, upholding our reputation for excellence and reliability with unwavering dedication.
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)