Product application
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., our commitment goes beyond mere responsibility. It is fueled by a fervent passion for the exquisite artistry and meticulous science that define precision manufacturing. Our unrivaled expertise serves as a beacon in the realm of high-end component fabrication, shedding light on the path towards unmatched precision and excellence. We are trailblazers in the creation and production of groundbreaking intelligent automation equipment. Our state-of-the-art solutions cater to a wide array of industries, skillfully addressing diverse applications, including:
- Medical and Biotech: We deliver precisely engineered high-precision components and innovative solutions for cutting-edge medical devices, consistently upholding the highest quality standards in the industry.
- Semiconductors: We empower chip manufacturing and its associated technologies by providing essential core components that are indispensable to the industry's thriving success.
- New Energy: We actively engage in the dynamic and sustainable advancement of pioneering energy equipment, driving eco-friendly technological progress forward.
- Automotive: We supply indispensable components that drive innovation within the automotive sector, facilitating the evolution of smart and electric vehicles.
Main Products
- We specialize in non-standard customized components, extensively serving the medical, automation, semiconductor, and automotive industries, ensuring unparalleled precision and exceptional quality.
Why choose us
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. With this exceptional fleet at our disposal, we are empowered to expertly manage the intricate machining requirements of diverse industries. Our commitment to precision and efficiency is unrivaled, ensuring our clients experience unmatched excellence and satisfaction.
- With a rich history spanning two decades, we skillfully combine vast production experience with extensive technical and process prowess. This guarantees exceptional quality, innovative solutions, and positions us as trailblazers in the domain of precision engineering, setting a benchmark for excellence that others aspire to achieve.
State-of-the-Art Production Equipment
High-Precision Inspection Equipment
Quality Ensurance
Exemplary Incoming Material Examination Processes
Every single raw material that enters our warehouse is subjected to an exhaustive and meticulous examination process. Our precise analyses include a comprehensive evaluation of the chemical composition as well as an in-depth inspection of the physical properties. We steadfastly maintain our commitment to quality by requiring every supplier to provide a Certificate of Origin and a stamped Declaration of Conformity. This rigorous authentication ensures that only the highest quality materials are utilized in our high-precision medical machining services. Our stringent standards guarantee that these materials meet unparalleled levels of integrity and purity, perfectly aligning with our unwavering dedication to quality.
Rigorous In-Process Quality Assurance
Amidst our intricate and precise machining operations, each component is meticulously examined to ensure its dimensions and tolerances not only meet but surpass our stringent specifications. Our diligent and ongoing inspection protocol is strategically crafted to detect potential defects at an early stage, thereby preventing any non-conforming parts from advancing to further production stages. This vigilant approach is crucial in minimizing the risk of inferior goods, ensuring superior quality at every phase of production, and maintaining excellence throughout the entire process.
Strategically Focused First Article Inspection (FAI)
Our First Article Inspection (FAI) process is a foundational strategy that plays a critical role in identifying and addressing potential production challenges early on. This proactive methodology prevents issues from escalating into full-scale production complications. The thorough and precise nature of our FAI process is vital in mitigating quality risks, ensuring our products consistently achieve the highest standards. This relentless commitment to excellence permeates every aspect of our production cycle, guaranteeing that we meet and exceed the ultimate quality benchmarks.
Meticulously Thorough Final Inspection
Before any product departs from our facility, it undergoes an exacting and comprehensive final inspection. This rigorous process evaluates dimensions, visual appearance, performance, and any customer-specific requirements with the utmost precision. Our all-encompassing inspection is a testament to our relentless commitment to quality, ensuring that every part dispatched from our premises meets our exacting standards. We are dedicated to delivering nothing but the highest quality products to our valued customers, upholding our reputation for excellence and reliability.
Packaging & Shipping
Company Profile
Established initially in 2002 and officially founded in 2009, Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd. has risen as a beacon of high-precision component machining excellence. Over the years, our commitment to innovation has propelled us to the forefront of precision engineering, making us pioneers in the domain. Our relentless pursuit of technical advancement over the past two decades has solidified our position as industry leaders. We have developed an extensive reservoir of technical proficiency, garnering a distinguished market reputation that distinguishes us as a vanguard in the field. Our unparalleled capabilities in precision medical machining allow us to consistently achieve extraordinary tolerances and flawless surface finishes, positioning us as the go-to choice for the medical industry.
With four strategically situated production bases in the dynamic centers of Shenzhen and Guiyang, supported by a committed team of over 400 highly skilled professionals, Donghui has meticulously constructed a comprehensive and vertically integrated industry chain. Seamlessly blending research and development, production, and logistics, we ensure to exceed the diverse expectations of our clientele with exceptional efficiency and unmatched quality. Our cutting-edge facilities are adeptly equipped to tackle the most complex and challenging machining tasks, continually upholding our esteemed repute 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)