Product application
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., we are not just committed, but profoundly inspired to excel in the art and science of manufacturing. Our unwavering dedication defines us, as we pursue the pinnacle of craftsmanship and precision in every venture. Our deep-rooted expertise illuminates the path to unparalleled precision, acting as a lighthouse in the elite realm of component fabrication, where excellence is not just an aim, but a standard. Pioneering innovation, we set the benchmark in the design and production of revolutionary intelligent automation equipment. Our state-of-the-art solutions are engineered to meet an expansive range of industry demands and applications, including:
- Medical and Biotech: Delivering meticulously crafted, high-precision components and ingenious solutions that define the future landscape of medical device technology.
- Semiconductors: Equipping chip manufacturing and related equipment with essential core components that are indispensable to the industry's advancement.
- New Energy: Contributing crucially to the progressive and sustainable development of cutting-edge energy equipment.
- Automotive: Providing essential components that propel innovation in the automotive sector, fostering the progression of intelligent and electric vehicle technology.
Main Products
- Our expertly engineered non-standard customized components are extensively utilized across critical industries, including medical, automation, semiconductor, and automotive sectors.
Why choose us
Core Advantages
- A Fleet of Excellence: A Benchmark of Industrial Prowess Our operations are fortified with an impressive fleet of over 300 of the industry's most elite machinery units. This ensures we are comprehensively equipped with a diverse and expansive array of equipment categories, setting the standard in industrial capability. These top-tier branded machinery units form the backbone of our precision-driven manufacturing, enabling us to masterfully address the diverse and demanding machining needs across a myriad of industries with unrivaled precision and efficiency. Our broad capabilities ensure adherence to the highest quality standards and bespoke customization, crafted meticulously to the exclusive requirements of our valued clientele.
- With a proud legacy spanning 20 years, we possess a vast reservoir of production experience, seamlessly integrated with profound technical expertise and process advantages. This guarantees superior quality and pioneering innovation, empowering us to deliver outstanding products that consistently exceed expectations and set pioneering benchmarks in the industry.
State-of-the-Art Production Equipment: Cutting-Edge Technology for Unmatched Quality
High-Precision Inspection Equipment: Ensuring Flawless Accuracy and Consistency
Quality Ensurance
Meticulous and Rigorous Incoming Material Inspection: Excellence Beyond Industry Standards
Every piece of raw material entering our secured warehouse undergoes a comprehensive and rigorous evaluation. This sets the benchmark for quality assurance, incorporating a thorough analysis of chemical composition alongside a detailed examination of physical properties. Our commitment to excellence requires a Certificate of Origin and a stamped Declaration of Conformity from each supplier. This meticulous process ensures only top-tier materials are utilized in our high-precision medical machining services, guaranteeing material integrity and purity while strictly adhering to our high standards.
Rigorous In-Process Quality Control: Our Quest for Perfection
During the intricate machining process, each component is carefully analyzed to ensure its dimensions and tolerances align with our stringent specifications. This ongoing inspection protocol proactively detects potential defects, preventing non-conforming parts from proceeding. This vigilant approach effectively reduces the risk of producing substandard goods, maintaining superior quality throughout every production phase.
Proactive and Comprehensive First Article Inspection (FAI): Our Preventive Framework
Our First Article Inspection (FAI) is central to our strategic approach, expertly identifying and addressing potential production challenges from the outset. This proactive methodology prevents issues from escalating into mass production. The thorough and precise FAI process is crucial for minimizing quality risks and ensuring our products consistently meet the pinnacle of standards, reflecting our unwavering dedication to excellence through the entire production cycle.
Thorough and Detailed Comprehensive Final Inspection: The Ultimate Guardian of Quality
Before any product leaves our facility, it is subjected to a meticulous and comprehensive final inspection. This process rigorously evaluates dimensions, visual appearance, and performance, along with any customer-specific requirements. This thorough inspection exemplifies our steadfast commitment to quality, ensuring that every part dispatched meets our exacting standards, providing only the highest quality products to our esteemed customers.
Packaging & Shipping
Company Profile
Since its illustrious inception in 2009, building upon its founding vision from 2002, Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd. has passionately dedicated itself to mastering the art and science of high-precision component machining. With an unwavering commitment to innovation over the past two decades, we have emerged as trailblazers in the realm of precision engineering. Through relentless technical research, we have established ourselves as industry pioneers, setting benchmarks of excellence. We have amassed an unrivaled wealth of technical expertise, positioning ourselves as market leaders with a stellar reputation for excellence. Our unmatched prowess in precision medical machining services consistently achieves the most exacting tolerances and flawless surface finishes. This places us as the preferred choice in the medical sector, where our precision and reliability are trusted and valued.
With four strategically positioned production bases, nestled in the dynamic and bustling centers of Shenzhen and Guiyang, and powered by an ambitious workforce of over 400 highly skilled employees, Donghui has meticulously crafted a robust, vertically integrated industry chain. This chain seamlessly intertwines research and development, production, and delivery, ensuring that we consistently meet and exceed the diverse needs of our clientele with exceptional efficiency and unparalleled quality. Our state-of-the-art facilities are expertly equipped to undertake the most intricate and demanding machining tasks, cementing our prestigious 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)