Product application
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., we are passionately committed to perfecting the craft of precision manufacturing. Where time-honored craftsmanship intersects with cutting-edge innovation, we herald a new era of unparalleled excellence. Our relentless quest for perfection ensures that every creation is a tribute to impeccable artistry. By harnessing the latest technologies and adhering to our unwavering standards of quality, we distinguish ourselves, delivering exceptional, intricately engineered components that represent the pinnacle of precision and artistry. With unmatched expertise in precision engineering, we establish the gold standard for component excellence. Our remarkable agility and sophisticated finesse ensure unparalleled quality across every facet of our operations, solidifying our position as pioneers and leaders in the industry. As trailblazers of innovation, we redefine benchmarks in the design and delivery of revolutionary intelligent automation equipment. Our groundbreaking solutions seamlessly integrate into diverse industries, masterfully addressing the unique challenges of various applications, including:
- Medical and BiotechOur meticulously engineered, ultra-high-precision components and transformative solutions lead the vanguard of advanced medical technologies, setting unprecedented standards of excellence in the field.
- SemiconductorsWith our critical and essential components, we are at the forefront of driving advancements in chip fabrication and related equipment, significantly boosting efficiency and innovation within the semiconductor industry.
- New EnergyWe are pivotal in the innovative and sustainable evolution of next-generation energy equipment, crucially contributing to the future landscape of energy solutions.
- AutomotiveProviding indispensable components, we lead innovation within the automotive industry. Our contributions advance the development of intelligent and electric vehicles, shaping the future of mobility.
Main Products
- Our expertly crafted non-standard customized components epitomize excellence. Serving vital sectors such as medical, automation, semiconductor, and automotive industries, we deliver unparalleled precision and superior quality that stands the test of time.
Why choose us
Core Advantages
- A Fleet of Excellence: A Benchmark of Industrial Prowess Our operations are powered by an extraordinary fleet of more than 300 of the industry's most sophisticated and advanced machinery units. This extensive and innovative assembly propels us to the forefront of innovation, ensuring our leadership in adaptability and precision. By continuously delivering groundbreaking solutions, we set the industry standard for excellence, perpetually aiming for unparalleled precision and exceptional quality. These Top-Tier Branded Our pioneering machinery units are the cornerstone of our precision-centric manufacturing operations, forming the essential infrastructure that upholds our steadfast production standards. With these state-of-the-art tools, we perpetually refine and elevate our manufacturing processes to achieve consistently superior results. With our top-tier machines, we flawlessly execute intricate and challenging machining tasks across a multitude of industries, achieving unmatched precision and efficiency. Our expansive capabilities ensure unwavering adherence to the most stringent quality standards while providing bespoke customization that not only fulfills but consistently surpasses the unique expectations of our valued clients, exceeding their highest aspirations.
- Celebrating an esteemed 20-year legacy, we draw from an abundant reservoir of manufacturing expertise intricately woven with profound technical knowledge and process mastery. This seamless synergy ensures not only superior quality but also revolutionary innovation. We empower ourselves to consistently deliver extraordinary products that surpass expectations and redefine industry standards of excellence.
State-of-the-Art Production Equipment: Harnessing Cutting-Edge Technology for Unmatched Quality
High-Precision Inspection Equipment: Ensuring Flawless Accuracy and Consistency
Quality Ensurance
Exquisite and Exacting Incoming Material Inspection: In the realm where precision is paramount, we transcend the ordinary with unmatched methodologies, laying the groundwork for exceptional quality. Crafting revolutionary standards, we influence every production stage, embodying excellence in meticulously crafted steps, ensuring our materials reflect the sophisticated methods we uphold.
Each raw material entering our state-of-the-art facility is subjected to rigorous evaluation, setting unprecedented quality assurance benchmarks. Our comprehensive approach includes detailed chemical composition analysis and rigorous physical property assessments. Suppliers must provide a Certificate of Origin alongside a verified Declaration of Conformity, ensuring only top-tier materials are used in our cutting-edge medical machining services. This stringent validation process bolsters material integrity, perfectly aligning with our unwavering dedication to unparalleled quality.
Uncompromising In-Process Quality Control: Our steadfast dedication to meticulous detail and vigilant oversight drives us towards perfection. This scrupulous process ensures our standard of excellence is consistently achieved-and often surpassed-throughout every production phase.
During the intricate machining process, each component is rigorously scrutinized to ensure dimensions and tolerances meet our stringent specifications. This proactive inspection protocol is vital in identifying and intercepting potential defects, preventing non-conforming parts from proceeding. Through this diligent approach, we significantly reduce risks of substandard production, maintaining exceptional quality throughout every production stage.
Anticipatory and Comprehensive First Article Inspection (FAI): Our preventative framework is the cornerstone of immaculate excellence, demonstrating unmatched precision and thoroughness.
The First Article Inspection (FAI) process is a key element of our quality strategy, skillfully identifying and resolving potential production challenges from the start. This proactive approach prevents issues from escalating into production obstacles. Our thorough FAI process minimizes quality risks, ensuring our products consistently meet peak standards and illustrating our unwavering commitment to excellence across the production spectrum.
Meticulous and Detailed Comprehensive Final Inspection: The ultimate guardian of exceptional quality and precision, ensuring the delivery of perfection.
Before any product departs our facility, it undergoes a meticulous and detailed comprehensive final inspection. This rigorous evaluation encompasses assessments of dimensions, visual appeal, performance, and adherence to customer-specific requirements. This thorough inspection highlights our unwavering dedication to quality, ensuring every delivered part meets our exacting standards, providing our esteemed customers with products of the highest caliber.
Packaging & Shipping
Company Profile
In the revered year of 2009, although our roots reach back to 2002, Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd. emerged as a shining beacon of innovation in the elite realm of high-precision component machining. Our esteemed journey has been fueled by an unwavering commitment to the artful craftsmanship and scientific precision of engineering, spanning more than two illustrious decades of relentless innovation and extraordinary excellence. We have indelibly inscribed our name as trailblazers in precision engineering, continually pushing the frontiers of technical research and setting groundbreaking industry standards, consistently exceeding expectations in both innovation and unmatched quality. We have masterfully cultivated an exceptional level of technical expertise, establishing ourselves as market leaders with a distinguished reputation for unparalleled excellence. Our unrivaled proficiency in precision medical machining services is unmatched, consistently achieving the most stringent tolerances and delivering impeccable surface finishes. This unwavering dedication cements our status as the premier choice in the medical sector. Our precision and steadfast reliability have earned us enduring trust and esteem, making us the foremost authority for superior machining solutions.
With four strategically situated production facilities, in the vibrant and bustling hubs of Shenzhen and Guiyang, supported by an exceptional team of over 400 highly qualified specialists, Donghui has meticulously crafted a comprehensive, vertically integrated industry chain. This chain seamlessly connects cutting-edge research and development, superior production, and flawless delivery. Our operations ensure we consistently meet and exceed the diverse demands of our clients with remarkable efficiency and unmatched quality. Our state-of-the-art facilities are expertly designed to handle the most intricate and demanding machining tasks, reinforcing our esteemed reputation for excellence and pioneering 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)