Product application
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., our commitment isn't just a responsibility; it's a passionate pursuit of the art and science of precision manufacturing craftsmanship. Our unparalleled expertise acts as a beacon in the domain of elite component fabrication, guiding the way towards achieving unmatched meticulous precision. We are trailblazers in the creation and production of revolutionary intelligent automation equipment. Our state-of-the-art solutions serve an array of industries, skillfully addressing a variety of applications, including:
- Medical and Biotech: Delivering expertly engineered high-precision components and forward-thinking solutions for cutting-edge medical devices, ensuring adherence to the highest quality standards.
- Semiconductors: Strengthening chip production and its related equipment by providing essential core components vital to the industry's triumph.
- New Energy: Committed to the robust and sustainable progress of groundbreaking energy equipment, advancing eco-friendly technological innovations.
- Automotive: Supplying crucial components that drive innovation within the automotive sector, supporting the growth of intelligent and electric vehicles.
Main Products
- We excel in crafting non-standard, tailored components, extensively supporting the medical, automation, semiconductor, and automotive sectors, guaranteeing peerless 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. This capability empowers us to skillfully fulfill the intricate machining needs of diverse industries with unparalleled precision and efficiency.
- 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, setting us apart as pioneers in the realm of precision engineering.
State-of-the-Art Production Equipment
High-Precision Inspection Equipment
Quality Ensurance
Exemplary Incoming Material Examination
Each raw material that enters our facility is subjected to a comprehensive and meticulous examination process. We conduct detailed analyses of both chemical compositions and physical properties to ensure the utmost quality. Every supplier is mandated to provide a Certificate of Origin and a stamped Declaration of Conformity, guaranteeing that only premium materials are used in our high-precision medical machining services. Our rigorous authentication process ensures these materials adhere to stringent standards of purity and integrity, aligning with our unwavering commitment to exceptional quality.
Intensive In-Process Quality Assurance
Throughout our intricate machining operations, each component undergoes meticulous scrutiny to ensure its dimensions and tolerances not only meet but surpass our stringent specifications. Our diligent inspection protocol is designed to identify potential defects at the earliest stages, thereby preventing non-conforming parts from advancing through production. This vigilant approach is crucial in minimizing subpar goods, ensuring superior quality is maintained at every phase, and reinforcing excellence across the entire production process.
Strategic First Article Inspection (FAI)
Our First Article Inspection (FAI) process is a foundational strategy, vital for identifying and solving potential production issues early on, preventing escalation into mass production. The comprehensive and precise nature of our FAI process minimizes quality risks, ensuring our products consistently reach the highest standards. This dedication to excellence permeates every step of the production cycle, ensuring we consistently meet and exceed all quality benchmarks.
Meticulous Comprehensive Final Inspection
Before leaving our facility, every product undergoes a meticulous and exhaustive final inspection. This process rigorously evaluates dimensions, visual aesthetics, performance, and any specific customer requirements. Our comprehensive inspection is a testament to our relentless commitment to quality, ensuring that each part dispatched from our facility meets our rigorous standards. We are unwavering in delivering only the finest products to our valued customers, upholding our reputation for excellence and reliability.
Packaging & Shipping
Company Profile
Since its inception in 2009, following its founding roots in 2002, Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd. has emerged as a bastion of expertise in high-precision basic component machining. With an unwavering dedication to innovation over the past two decades, we have delved deep into technical research, establishing ourselves as pioneers in precision engineering. We have amassed a wealth of technical expertise, earning a stellar market reputation that sets us apart as a leader in the industry. Our capabilities in precision medical machining services are unmatched, consistently achieving incredibly tight tolerances and impeccable surface finishes, making us the preferred choice in the medical sector.
With four strategically located production bases in the bustling hubs of Shenzhen and Guiyang, powered by a dedicated workforce of over 400 skilled employees, Donghui has crafted a robust and vertically integrated industry chain. This chain effortlessly weaves together research and development, production, and delivery, ensuring that we meet and exceed the diverse needs of our customers with outstanding efficiency and unrivaled quality. Our state-of-the-art facilities are equipped to handle the most intricate and demanding machining tasks, maintaining our 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)