Product application
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., we are not merely driven by duty; our hearts beat with an ardent passion for the unparalleled artistry and intricate science that define precision manufacturing. Our unrivaled expertise shines like a beacon in the sophisticated world of high-end component fabrication, guiding the way to flawless accuracy and meticulous precision. We stand at the forefront of innovation, spearheading the development and production of revolutionary intelligent automation equipment. Our state-of-the-art solutions cater to a vast array of industries, effectively fulfilling diverse applications, including:
- Medical and Biotech: Delivering meticulously crafted high-precision components and pioneering solutions for cutting-edge medical devices, consistently upholding the highest echelons of quality standards.
- Semiconductors: Bolstering chip production and its vital equipment by providing essential core components that are integral to the industry's triumph.
- New Energy: Committing to the robust and sustainable progression of innovative energy equipment, championing eco-friendly technological development.
- Automotive: Supplying crucial components that are the lifeblood of innovation in the automotive arena, facilitating the evolution of smart and electric vehicles.
Main Products
- We excel in creating bespoke, non-standard components, extensively serving the medical, automation, semiconductor, and automotive industries, thereby ensuring unparalleled precision and superior 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. This capability empowers us to skillfully fulfill the intricate machining needs of diverse industries with unparalleled precision and efficiency. Our state-of-the-art fleet ensures that every challenge is met with utmost dedication and expertise, allowing us to deliver solutions that are both innovative and reliable.
- With a rich history spanning two decades, we leverage vast production experience combined with substantial technical and process prowess, guaranteeing exceptional quality and forward-thinking innovation. Our commitment to excellence sets us apart as pioneers in the realm of precision engineering, consistently pushing the boundaries to deliver unmatched solutions.
State-of-the-Art Production Equipment
High-Precision Inspection Equipment
Quality Ensurance
Unmatched Incoming Material Inspection
Each raw material that graces our warehouse undergoes a detailed and stringent examination like no other. Our comprehensive assessments delve into the depths of chemical composition while thoroughly inspecting the physical properties. Our unwavering dedication to quality is further reinforced by mandating that every supplier provides a Certificate of Origin alongside a stamped Declaration of Conformity. This rigorous selection process ensures only the finest materials are chosen for our high-precision medical machining services. Our robust authentication procedures guarantee that these materials meet the zenith of integrity and purity, aligning seamlessly with our steadfast commitment to unrivaled quality.
Robust In-Process Quality Assurance
Amidst our intricate and precise machining operations, every single component undergoes meticulous scrutiny to ensure its dimensions and tolerances not only meet but exceed our stringent specifications. Our diligent, ongoing inspection protocol is strategically crafted to catch potential defects early, effectively preventing non-conforming parts from advancing to the next stages. This vigilant approach is crucial in reducing the risk of substandard goods, ensuring superior quality at every production phase, and maintaining a standard of excellence throughout the entire process.
Proactive First Article Inspection (FAI)
Our First Article Inspection (FAI) process acts as a cornerstone strategy, vital for identifying and addressing potential production hurdles at the nascent stage. This proactive methodology averts issues from escalating into large-scale production challenges. The exhaustive and precise nature of our FAI process is indispensable in minimizing quality risks, ensuring our products consistently rise to the pinnacle of standards. This unwavering commitment to excellence permeates every facet of the production cycle, ensuring we consistently meet and exceed the loftiest quality benchmarks.
Meticulous Final Inspection Craftsmanship
Before any product embarks on its journey from our facility, it undergoes a meticulous and thorough final inspection process. This comprehensive evaluation rigorously assesses dimensions, visual appearance, performance, and any and all customer-specific requirements. Our exhaustive inspection process stands as a testament to our relentless commitment to quality, ensuring every part leaving our facility aligns with our exacting standards. We are resolute in delivering only the highest quality products to our esteemed customers, maintaining our reputation for unparalleled excellence and reliability.
Packaging & Shipping
Company Profile
Since the dawn of its inception in 2009, with foundational roots stretching back to 2002, Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd. has blossomed into a stronghold of expertise in the realm of high-precision basic component machining. Our relentless commitment to innovation over the past two decades has driven us to the forefront of technical research, cementing our position as trailblazers in the field of precision engineering. We have cultivated an impressive reservoir of technical proficiency, garnering an exceptional market reputation that distinguishes us as industry leaders. Our unmatched capabilities in precision medical machining services consistently achieve astonishingly tight tolerances and flawless surface finishes, establishing us as the go-to choice in the medical sector.
With a network of four strategically positioned production bases nestled within the vibrant locales of Shenzhen and Guiyang, driven by a team of over 400 highly skilled professionals, Donghui has meticulously crafted a formidable and vertically integrated industry chain. This chain seamlessly intertwines research and development, production, and delivery, ensuring that we exceed the diverse needs of our customers with exceptional efficiency and unparalleled quality. Our cutting-edge facilities are equipped to undertake even the most intricate and demanding machining tasks, upholding 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)