Product application
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., we are more than just committed; we are passionately driven by the delicate art and intricate science of precision manufacturing, ensuring excellence in every facet. Our unrivaled expertise shines brightly in the world of high-end component fabrication, serving as a beacon that guides the industry towards unparalleled precision and excellence. We are trailblazers in developing and producing innovative intelligent automation equipment. Our state-of-the-art solutions efficiently serve a wide array of industries, addressing diverse applications with precision, including:
- Medical and Biotech: We deliver expertly crafted, high-precision components and pioneering solutions for cutting-edge medical devices, consistently upholding the highest standards of quality and innovation.
- Semiconductors: We empower chip production and related equipment by providing essential core components that are vital for the industry's thriving success.
- New Energy: We are actively engaged in the robust and sustainable advancement of breakthrough energy equipment, propelling eco-friendly technological progress to new heights.
- Automotive: Supplying indispensable components that drive innovation within the automotive sector, supporting the evolution of intelligent and electric vehicles with superior technology.
Main Products
- We excel in creating non-standard customized components, extensively supporting the medical, automation, semiconductor, and automotive industries with unmatched precision and outstanding 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 formidable capability empowers us to skillfully fulfill the intricate machining needs of diverse industries with unmatched precision and efficiency, ensuring our clients receive the pinnacle of engineering excellence.
- 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. This expertise sets us apart as pioneers in the realm of precision engineering, consistently pushing the boundaries of what is possible.
State-of-the-Art Production Equipment
High-Precision Inspection Equipment
Quality Ensurance
Exemplary Incoming Material Examination
Each raw material entering our warehouse undergoes a comprehensive and rigorous examination procedure. This meticulous process includes an in-depth evaluation of the chemical composition coupled with a detailed inspection of the physical properties. To maintain our unwavering dedication to quality, we require every supplier to provide a Certificate of Origin along with a stamped Declaration of Conformity. These steps ensure that only the highest-grade materials are selected for use in our high-precision medical CNC machining services. Our stringent verification process guarantees these materials meet the pinnacle of integrity and purity standards, perfectly aligning with our steadfast dedication to superior quality.
Intensive In-Process Quality Assurance
Throughout our complex and exacting machining operations, every component is meticulously scrutinized to ensure its dimensions and tolerances not only meet but exceed our rigorous specifications. Our diligent and continuous inspection protocol is strategically implemented to detect potential defects at the earliest opportunity, thereby preventing any non-conforming parts from advancing to subsequent stages. This vigilant approach is crucial in minimizing the risk of subpar goods, ensuring unmatched quality at each phase of production, and maintaining excellence throughout the entire process.
Strategic First Article Inspection (FAI)
Our First Article Inspection (FAI) process is a cornerstone strategy essential for identifying and resolving potential production challenges at an early stage, effectively preventing issues from escalating into full-scale production. The thorough and precise nature of our FAI process plays a crucial role in minimizing quality risks, ensuring our products consistently achieve the highest standards. This unwavering dedication to excellence infiltrates every aspect of the production cycle, guaranteeing that we meet and exceed the most stringent quality benchmarks.
Meticulous Comprehensive Final Inspection
Before any product departs from our facility, it undergoes a rigorous and detailed final inspection. This evaluation thoroughly examines dimensions, visual appearance, performance, and any customer-specific requirements. Our exhaustive inspection process exemplifies our relentless commitment to quality, ensuring that every part leaving our facility meets our exacting standards. We are committed to delivering only the highest quality products to our esteemed customers, upholding 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)