Product application
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., our commitment goes beyond ordinary duty; it is fueled by a deep passion for the art and intricate science of precision manufacturing. Our unparalleled expertise shines brightly as a beacon in the world of high-end component fabrication, charting a course toward meticulous precision with unrivaled mastery. We are at the forefront of innovation in developing and producing revolutionary intelligent automation equipment. Our groundbreaking solutions span a wide array of industries, effectively addressing diverse applications, such as:
- Medical and Biotech: Delivering meticulously crafted high-precision components and cutting-edge solutions for advanced medical devices, maintaining the highest quality standards in the industry.
- Semiconductors: Enhancing chip production and related equipment with essential core components that are pivotal to industry success.
- New Energy: Driving the robust and sustainable advancement of pioneering energy equipment, promoting eco-friendly technological innovations.
- Automotive: Supplying crucial components that drive innovation within the automotive realm, supporting the transformation and growth of smart and electric vehicles.
Main Products
- We excel in creating non-standard customized components, extensively catering to the medical, automation, semiconductor, and automotive industries, guaranteeing 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.
- With a rich history spanning two decades, Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd. leverages vast production experience combined with substantial technical and process prowess. We guarantee 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
Unparalleled Incoming Material Examination
Every raw material that arrives at our warehouse is subjected to a comprehensive and rigorous evaluation process. Our detailed assessments involve an in-depth analysis of the chemical composition and a meticulous examination of the physical properties. Committed to maintaining superior quality, we require every supplier to provide a Certificate of Origin and a stamped Declaration of Conformity. This ensures that only the finest materials are chosen for our precision-driven medical machining services. Our stringent verification process guarantees these materials adhere to the highest standards of integrity and purity, perfectly aligning with our unwavering dedication to unparalleled quality.
Rigorous In-Process Quality Assurance
Throughout our intricate and precise machining operations, each component undergoes meticulous scrutiny to ensure its dimensions and tolerances not only meet but surpass our exacting specifications. Our diligent and continuous inspection protocol is strategically crafted to intercept potential defects at the earliest stage, thus preventing non-conforming parts from advancing through the production line. This vigilant approach is instrumental in minimizing the risk of substandard products, ensuring superior quality at every phase of production and upholding excellence throughout the entire process.
Proactive First Article Inspection (FAI)
Our First Article Inspection (FAI) process is a cornerstone strategy crucial for identifying and resolving potential production challenges at their inception. This proactive approach is vital to prevent issues from escalating into mass production. The thorough and precise nature of our FAI process is essential in mitigating quality risks, ensuring our products consistently achieve the highest industry standards. This unwavering dedication to excellence permeates every facet of the production cycle, ensuring we consistently meet and exceed the most stringent quality benchmarks.
Thorough Comprehensive Final Inspection
Before any product departs from our facility, it undergoes a meticulous and exhaustive final inspection. This process rigorously evaluates dimensions, visual appearance, performance, and any customer-specific requirements. Our comprehensive inspection process is a testament to our relentless pursuit of quality, ensuring that every part dispatched from our facility meets our exacting standards. We are unwavering in our commitment to deliver only the highest quality products to our valued customers, steadfastly 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 masterfully positioned itself 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 pioneering leaders in the realm of precision engineering. We have amassed an extraordinary wealth of technical expertise, earning us a stellar market reputation that unequivocally sets us apart as a leader in the industry. Our capabilities in precision medical machining services are unparalleled, consistently achieving incredibly tight tolerances and flawless surface finishes, making us the preferred choice for the medical sector's most demanding needs.
With four strategically located production bases in the thriving industrial hubs of Shenzhen and Guiyang, powered by a dedicated workforce of over 400 highly skilled employees, Donghui has crafted a robust and vertically integrated industry chain. This chain effortlessly intertwines research and development, production, and delivery, ensuring that we meet and surpass the diverse needs of our customers with outstanding efficiency and unrivaled quality. Our cutting-edge facilities are meticulously 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)