Product application
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., our commitment is not just a responsibility-it's an ardent passion for the artful mastery and detailed science of precision manufacturing. With unparalleled expertise, we illuminate the path for high-end component fabrication, guiding the industry towards unmatched precision with brilliance and clarity. We stand at the forefront of innovation, crafting and producing revolutionary intelligent automation equipment. Our advanced solutions perfectly serve a wide array of industries, adeptly handling diverse applications, including:
- Medical and Biotech: Providing meticulously crafted, high-precision components and groundbreaking solutions for cutting-edge medical devices, consistently achieving the highest quality standards.
- Semiconductors: Steering chip production and its critical apparatus by delivering essential core components vital for the industry's triumph.
- New Energy: Actively propelling the robust and sustainable evolution of innovative energy apparatus, championing eco-friendly technological advancements.
- Automotive: Supplying indispensable components that drive innovation in the automotive sector, supporting the progression of intelligent and electric vehicles.
Main Products
- Our expertise lies in non-standard customized components, widely catering to the medical, automation, semiconductor, and automotive industries, ensuring unrivaled precision and exceptional 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, guaranteeing 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
Unrivaled Incoming Material Examination
Every raw material that enters our warehouse undergoes an exhaustive and rigorous scrutiny process, ensuring only the highest quality inputs for production. We meticulously analyze both the chemical composition and the physical properties, demanding a Certificate of Origin and a stamped Declaration of Conformity from every supplier. This ensures that only premier materials are selected for our high-precision medical machining services. Our rigorous authentication process guarantees these materials meet the pinnacle of purity and integrity, perfectly aligning with our commitment to top-tier quality.
In-Depth In-Process Quality Assurance
In our complex and precise machining operations, each component is meticulously analyzed to ensure its dimensions and tolerances not only meet but exceed our stringent specifications. Our continuous inspection protocol is strategically designed to detect potential defects early, preventing non-conforming parts from progressing to later stages. This vigilant approach is crucial in reducing the risk of substandard goods, ensuring excellence at each phase of production, and maintaining superior quality throughout the entire process.
Proactive First Article Inspection (FAI)
Our First Article Inspection (FAI) process is a keystone strategy in identifying and resolving potential production issues early on. This proactive method prevents complications from advancing into mass production. The precise and comprehensive nature of our FAI process is vital in minimizing quality risks, ensuring our products rise to the highest standards. Our dedication to excellence permeates every production cycle aspect, guaranteeing we meet and exceed top-tier quality benchmarks.
Thorough Comprehensive Final Inspection
Before any product leaves our facility, it undergoes a rigorous and detailed final inspection. This process evaluates every aspect, from dimensions and visual appearance to performance and customer-specific requirements. Our comprehensive inspection showcases our unwavering dedication to quality, ensuring every part leaving our facility meets our demanding standards. We are resolute in delivering only the finest products to our valued customers, maintaining 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 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)