Discover the epitome of precise engineering with Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., your trusted partner in OEM customized medical CNC machining, turning, and lathing services. Specially engineered for medical applications, our advanced machining capabilities guarantee that each component is crafted to perfection, achieving an astounding tolerance level of +/- 0.003mm. Our unparalleled expertise ensures that even non-standard hardware accessories meet the most exacting standards. Entrust us to deliver components of exceptional quality and unwavering reliability, all meticulously tailored to meet your unique specifications. Experience the future of medical machining excellence with Shenzhen Donghui Precision!
Product application
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., our commitment transcends traditional responsibility. It is a fervent pursuit of the art and science that defines precision manufacturing. Our relentless passion for perfection transforms each component into an exquisite masterpiece of craftsmanship. Our unparalleled expertise redefines the realm of high-end component fabrication, creating a legacy of unmatched precision and extraordinary excellence. We are trailblazers in the development and production of innovative intelligent automation equipment. Our avant-garde solutions serve an array of industries, meeting diverse application needs with precision and efficacy, including:
- Medical and Biotech: Transforming Healthcare with Precision: Providing precisely engineered, high-precision components and state-of-the-art solutions for pioneering medical devices, consistently upholding the highest quality standards that define our brand of excellence.
- Semiconductors: Driving Technological Advancements Forward: Empowering the semiconductor industry with essential core components vital for chip production and related equipment, ensuring progressive innovation and seamless success.
- New Energy: Pioneering Sustainable Innovation: Actively participating in the sustainable advancement of cutting-edge energy equipment, advancing eco-friendly technological breakthroughs.
- Automotive: Propelling the Future of Mobility: Supplying essential components that fuel innovation in the automotive industry, playing a pivotal role in the evolution of smart and electric vehicles.
Main Products: Expertise in Customization
- We specialize in crafting bespoke, non-standard customized components, extensively serving the medical, automation, semiconductor, and automotive industries with exceptional precision and superior quality.
Why choose us
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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 capability empowers us to skillfully fulfill the intricate machining needs of diverse industries with unparalleled precision and efficiency.
- Boasting a rich heritage spanning two decades, we harness our extensive production expertise, merged with remarkable technical and process acumen. Our commitment guarantees not only exceptional quality but also visionary innovation. This dedication firmly establishes us as trailblazers in the realm of precision engineering.
State-of-the-Art Production Equipment
High-Precision Inspection Equipment
Quality Ensurance
Exemplary Incoming Material Assessment
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., each raw material arriving at our distinguished facility undergoes an exhaustive and meticulous evaluation process, adhering to our unparalleled standards of quality. This rigorous assessment involves a thorough analysis of the chemical composition combined with a detailed evaluation of physical properties. We are unwavering in our commitment to quality, requiring suppliers to provide a Certificate of Origin and a duly stamped Declaration of Conformity. This stringent protocol guarantees the selection of the highest integrity materials for our precision medical machining services. Our authentication process harmoniously integrates with our unyielding dedication to outstanding quality.
Meticulous In-Process Quality Assurance
During our advanced machining operations, each component is subjected to meticulous scrutiny, ensuring its dimensions and tolerances not just meet but far surpass our demanding specifications. Our continuous and diligent inspection protocol is expertly crafted to identify potential defects at an early stage, effectively preventing non-conforming parts from advancing. This vigilant approach is essential to mitigating the risk of inferior goods, thus ensuring unmatched quality at every stage and maintaining excellence throughout the production process.
Proactive and Strategic First Article Inspection (FAI)
Our First Article Inspection (FAI) process is an essential strategic initiative crucial for the early identification and resolution of potential production challenges. This forward-thinking methodology ensures that any issues are effectively mitigated before escalating into significant production concerns. The comprehensive precision of our FAI process is vital in reducing quality risks, ensuring our products persistently achieve the zenith of industry standards. This steadfast commitment to excellence permeates every aspect of the production cycle, enabling us to not just meet but consistently surpass the most exacting quality benchmarks.
Comprehensive and Rigorous Final Inspection
Before any product departs from our esteemed facility, it undergoes a comprehensive and rigorous final inspection. This meticulous process evaluates dimensions, visual appearance, performance, and any specific customer requirements. Our thorough inspection process exemplifies our relentless commitment to quality, ensuring every part dispatched adheres to our stringent standards. We remain resolute in delivering only the highest caliber products to our valued customers, steadfastly upholding our distinguished reputation for excellence and reliability.
Packaging & Shipping
Company Profile
Founded in 2009, yet with its rich history tracing back to 2002, Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd. has emerged as a luminary in the realm of high-precision component machining. For over two decades, our unwavering commitment to relentless innovation propels us to the cutting edge of technical research, solidifying our status as pioneers in precision engineering and champions of excellence. We have achieved a profound level of technical mastery that solidifies a prestigious market position, distinguishing us as the undisputed industry leaders. Our unparalleled expertise in precision medical machining consistently achieves astonishingly tight tolerances and impeccable surface finishes, reinforcing our status as the go-to partner for the discerning medical sector, where precision is paramount.
With four strategically located production bases in the thriving hubs of Shenzhen and Guiyang, supported by an elite team of over 400 highly skilled professionals, Donghui has meticulously crafted a comprehensive and vertically integrated industry chain. This seamlessly interweaves meticulous research and groundbreaking development with precision production and timely delivery. This seamless integration allows us to meet and exceed our customers' diverse needs with remarkable efficiency and unmatched quality. Our state-of-the-art facilities are designed with precision to handle even the most intricate and demanding machining tasks, maintaining our esteemed reputation for excellence and pioneering innovation in every aspect.
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)
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