Product application
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., our relentless pursuit of perfection is not just a responsibility we uphold; it is a fervent drive inspired by our passion to excel in the sophisticated art and intricate science of manufacturing excellence. Our unmatched proficiency serves as a beacon of precision, illuminating the elite sphere of high-grade component manufacturing. At the vanguard of technological advancement, we establish the gold standard in designing and crafting breakthrough intelligent automation equipment. Our cutting-edge solutions are seamlessly woven into a diverse range of industries, addressing multifaceted needs across various applications, including:
- Medical and Biotech: Delivering precisely engineered, high-precision components and pioneering solutions uniquely designed for the next era of medical devices.
- Semiconductors: Augmenting chip manufacturing and associated equipment with critical core components that are absolutely vital.
- New Energy: Playing a pivotal role in the innovative and sustainable development of advanced energy equipment.
- Automotive: Supplying essential components that drive forward-thinking innovation in the automotive sector, supporting the evolution of smart and electric vehicles.
Main Products
- Crafted with expertise, our non-standard customized components serve vital industries such as medical, automation, semiconductor, and automotive with unparalleled excellence.
Why choose us
Core Advantages
- A Fleet of Excellence: A Benchmark of Industrial Prowess Our operations are bolstered by a formidable arsenal of over 300 cutting-edge machinery units, categorized to cover a vast spectrum of industrial needs. This diverse array positions us at the pinnacle of innovation and adaptability, sustaining our leadership in the field. These premium branded machinery units are the cornerstone of our precision-driven manufacturing process, empowering us to expertly navigate complex and demanding machining tasks across a wide array of industries with unparalleled precision and efficiency. Our expansive capabilities ensure we consistently meet the pinnacle of quality standards and provide bespoke customization, precisely crafted to meet the unique specifications of our distinguished clients.
- With a prestigious 20-year history, we draw from a deep well of manufacturing experience, seamlessly integrating substantial technical expertise and robust process strengths. This ensures superior quality and trailblazing innovation. Our enduring expertise empowers us to consistently produce extraordinary products that not only meet but surpass expectations, setting new benchmarks in the industry.
State-of-the-Art Production Equipment: Employing Cutting-Edge Technology for Unrivaled Quality
High-Precision Inspection Equipment: Guaranteeing Impeccable Accuracy and Consistency
Quality Ensurance
Meticulous and Rigorous Incoming Material Inspection: Beyond Industry Standards
Each raw material piece entering our secure warehouse undergoes an exhaustive and stringent evaluation, representing the pinnacle of quality assurance. This comprehensive protocol involves an in-depth chemical composition analysis and a thorough examination of physical properties. We demand that every supplier provides a Certificate of Origin and a stamped Declaration of Conformity, ensuring the selection of only the finest materials for our precision medical machining services. Our rigorous verification guarantees material integrity and purity, consistently aligning with our superior standards.
Rigorous In-Process Quality Control: Committed to Perfection
During the intricate machining process, every component is meticulously scrutinized to ensure dimensions and tolerances match our stringent specifications. This ongoing inspection protocol intercepts potential defects, preventing non-conforming parts from progressing. Our vigilant approach significantly lowers the risk of producing substandard goods, maintaining superior quality throughout each production phase.
Proactive and Comprehensive First Article Inspection (FAI): A Framework for Excellence
Our First Article Inspection (FAI) is a strategic cornerstone, adeptly identifying and resolving potential production challenges from the start. This proactive process prevents issues from escalating into mass production. Our comprehensive and precise FAI minimizes quality risks, consistently achieving the highest standards and reflecting our unwavering excellence throughout the production cycle.
Thorough and Detailed Comprehensive Final Inspection: The Quality Assurance Champion
Before leaving our facility, every product undergoes a meticulous final inspection. This rigorous evaluation checks dimensions, visual appearance, performance, and any customer-specific requirements. This extensive inspection underscores our relentless commitment to quality, ensuring each dispatched part meets our exacting standards and delivers 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, in the 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)