Product application
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., our unwavering dedication to excellence arises from a deep-seated passion for the art and science that define manufacturing mastery. We are steadfast in our commitment, ensuring that our craftsmanship remains a beacon of quality and precision. Our unmatched expertise guides us in precision, propelling us through the esteemed realm of top-tier component manufacturing with unparalleled skill. We illuminate the path of excellence, setting us apart as leaders in the industry. As trailblazers of innovation, we set the benchmark for crafting and delivering revolutionary intelligent automation equipment. Our state-of-the-art solutions seamlessly integrate across a wide spectrum of industries, addressing diverse needs in myriad applications, including:
- Medical and Biotech: Delivering meticulously engineered, ultra-high-precision components and pioneering solutions customized for cutting-edge medical devices, pushing the boundaries of innovation.
- Semiconductors: Enhancing chip production and related equipment with essential components that are both critical and irreplaceable, ensuring the smooth operation of semiconductor technologies.
- New Energy: Playing a significant role in the innovative and sustainable development of next-generation energy equipment, contributing to an eco-friendly future.
- Automotive: Providing vital components that drive innovation in the automotive industry, facilitating the advancement of smart and electric vehicles.
Main Products
- Masterfully crafted, non-standard customized components serve as the cornerstone of excellence across key industries such as medical, automation, semiconductor, and automotive sectors, showcasing our unparalleled commitment to quality and innovation.
Why choose us
Core Advantages
- A Fleet of Excellence: A Benchmark of Industrial Prowess Our operations boast an unparalleled fleet of over 300 of the industry's most sophisticated machinery units, establishing us as pioneers in both innovation and adaptability. This expansive and diverse catalog of equipment empowers us to consistently lead the charge in offering cutting-edge, superior solutions to meet the evolving demands of our clients. These Top-Tier Branded machinery units form the backbone of our precision-centric manufacturing, embodying reliability and excellence. Utilizing these high-caliber machines, we meet and exceed intricate and demanding machining requirements across diverse industries with exceptional precision and efficiency. Our comprehensive capabilities ensure strict adherence to the highest quality standards while offering bespoke customization, meticulously crafted to the distinctive needs of our esteemed clients, ensuring satisfaction and long-term partnerships.
- With a prestigious 20-year legacy, we leverage a wealth of manufacturing experience, seamlessly integrated with profound technical expertise and process strengths. This guarantees unmatched quality and groundbreaking innovation, allowing us to consistently deliver extraordinary products that not only meet but surpass expectations, setting new benchmarks and driving the industry forward.
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: Setting New Benchmarks in Precision Beyond Industry Standards
Every piece of raw material that enters our secure warehouse is subjected to an exhaustive evaluation process, establishing a gold standard in quality assurance that is unmatched. Our meticulous approach includes an in-depth analysis of chemical composition coupled with a comprehensive examination of physical properties. Our unwavering dedication mandates that each supplier provides a comprehensive Certificate of Origin and a stamped Declaration of Conformity, guaranteeing that only the finest materials are selected for our high-precision medical machining services. Such rigorous authentication ensures the integrity and purity of materials, consistently adhering to our elevated standards and demonstrating our commitment to quality excellence.
Rigorous In-Process Quality Control: Relentlessly Pursuing Perfection with Unyielding Vigilance
Throughout the intricate machining process, each component is meticulously scrutinized to ensure its dimensions and tolerances adhere precisely to our stringent specifications. This continual inspection protocol proactively intercepts potential defects, effectively preventing non-conforming parts from advancing further in the production process. Through this vigilant and thorough approach, we significantly mitigate the risk of producing substandard goods, ensuring that superior quality is maintained at every stage of production.
Proactive and Comprehensive First Article Inspection (FAI): Safeguarding Excellence and Precision from the Outset
Our First Article Inspection (FAI) serves as the cornerstone of our production strategy, skillfully identifying and resolving potential production challenges at the very start. This proactive approach ensures that issues are preemptively addressed, preventing them from escalating into mass production concerns. This comprehensive FAI process is vital for minimizing quality risks, consistently ensuring that our products meet the highest standards. It reflects our unwavering commitment to excellence throughout every phase of the production cycle.
Thorough and Detailed Comprehensive Final Inspection: The Ultimate Guardian of Quality and Precision Excellence
Before any product leaves our facility, it undergoes a meticulous final inspection process that is both rigorous and comprehensive. This final evaluation meticulously covers dimensions, visual appearance, and performance, in addition to customer-specific requirements. This extensive inspection process is a testament to our relentless commitment to quality, ensuring that every part dispatched meets our exacting standards, delivering only the highest quality products to our esteemed and valued customers.
Packaging & Shipping
Company Profile
Established in the illustrious year of 2009, with our roots tracing back to 2002, Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd. stands tall as a beacon of precision and innovation in the sphere of high-precision component machining. Our illustrious journey, fueled by an insatiable passion and unwavering dedication to the art and science of engineering, spans over two remarkable decades. We have passionately carved our niche as pioneers in precision engineering, relentlessly pursuing technical research and setting industry benchmarks of unparalleled excellence. We have amassed an unmatched depth of technical expertise, distinguishing ourselves as market leaders with a renowned reputation for exceptional excellence. Our supreme mastery in precision medical machining services consistently meets the most stringent tolerances and delivers impeccable surface finishes. This solidifies our standing as the foremost choice in the medical sector, where our precision and reliability continue to earn unwavering trust and admiration.
With four strategically positioned production bases, in the dynamic and thriving hubs of Shenzhen and Guiyang, supported by an inspiring workforce of over 400 highly skilled employees, Donghui has meticulously developed a robust, vertically integrated industry chain. This seamlessly connects research and development, top-tier production, and flawless delivery, ensuring that we meet and exceed the diverse needs of our clients with remarkable efficiency and unmatched quality. Our state-of-the-art facilities are fully equipped to tackle the most complex and challenging machining tasks, reinforcing our prestigious 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)