Product application
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., we are driven by an unparalleled fervor and dedication towards the fine art and meticulous science of precision manufacturing. Our unwavering commitment elevates us beyond the norm, infusing our work with a passionate enthusiasm that is evident in every meticulously crafted piece. Our profound expertise stands as a shining beacon in the intricate landscape of high-end component fabrication, illuminating the path of precision with an unwavering glow. Poised at the cutting edge of innovation, we are trailblazers in the design and production of groundbreaking intelligent automation equipment. Our visionary solutions cater to a vast spectrum of industries, addressing a plethora of applications, including:
- Medical and Biotech: Supplying meticulously engineered high-precision components and groundbreaking solutions for state-of-the-art medical devices, we uphold the highest quality standards, ensuring reliability and innovation at every turn.
- Semiconductors: Empowering chip manufacturing and its associated machinery with indispensable core components, we are integral to the industry's advancement and success.
- New Energy: Fueling the progressive and sustainable development of avant-garde energy equipment, our contributions champion eco-friendly innovations that pave the way for a greener future.
- Automotive: Providing crucial components that propel innovation within the automotive industry, we are instrumental in fostering the evolution of intelligent and electric vehicles, driving the future of mobility.
Main Products
- Our repertoire of specialized non-standard customized components is extensively utilized across the medical, automation, semiconductor, and automotive industries. We guarantee unparalleled precision and superior quality, setting the benchmark for excellence.
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. Our journey over the years has established a legacy of excellence that is reflected in every product we craft.
State-of-the-Art Production Equipment
High-Precision Inspection Equipment
Quality Ensurance
Meticulous and Thorough Incoming Material Inspection
Every piece of raw material entering our warehouse undergoes not just evaluation but a comprehensive and rigorous examination. We meticulously scrutinize the chemical composition and meticulously inspect the physical attributes, ensuring only the finest are selected for our high-precision medical machining services. Every supplier is mandated to provide a Certificate of Origin with a stamped Declaration of Conformity, securing the highest standards of integrity and purity. This rigorous authentication aligns with our unwavering commitment to excellence, ensuring that our quality standards are uncompromised.
Rigorous In-Process Quality Control Excellence
Throughout the precise and complex machining process, every component is scrutinized to ensure dimensions and tolerances not only meet but exceed our stringent specifications. Our vigilant and continuous inspection protocol is designed to proactively intercept defects, preventing any non-conforming parts from reaching the next stages. This meticulous approach is pivotal in reducing the risk of substandard product creation, guaranteeing superior quality at each production phase, and ensuring that excellence is consistently upheld throughout the process.
Proactive and Strategic First Article Inspection (FAI)
Our First Article Inspection (FAI) is a core strategy, crucial for identifying and resolving potential production challenges early on. This proactive method prevents issues from escalating into mass production. The thorough and precise nature of our FAI process is vital in minimizing quality risks, ensuring our products consistently achieve the highest standards. Our dedication to excellence permeates every production cycle facet, assuring our commitment to meet and exceed exceptional quality standards.
Comprehensive and Thorough Final Inspection
Before any product leaves our facility, it undergoes a detailed and comprehensive final inspection. This process rigorously evaluates all aspects, including dimensions, visual appearance, performance, and any custom-specific requirements. Our thorough inspection process is a testament to our relentless commitment to quality, ensuring every dispatched part meets our high standards. We are resolute in delivering only the most superior products to our esteemed customers, reinforcing 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 dedicated itself to the art and science of high-precision basic component machining. With an unwavering commitment 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 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 seamlessly weaves together research and development, production, and delivery, ensuring that we meet and exceed the diverse needs of our customers with exceptional efficiency and unmatched quality. Our state-of-the-art facilities are equipped to handle the most intricate and demanding machining tasks, maintaining our reputation for excellence and 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)