Product application
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., our dedication transcends mere obligation, fueled by an unwavering passion for the exquisite artistry and meticulous science of precision manufacturing. We are driven by the artistry and science of precision, ensuring each piece is crafted to perfection. Our unmatched expertise illuminates the field of high-end component fabrication, paving the way for unparalleled precision and exceptional excellence. We lead the industry with our masterful craftsmanship and dedication to superior quality. We spearhead the development and production of cutting-edge intelligent automation equipment. Our advanced solutions cater to a diverse range of industries, effectively addressing a multitude of applications, including:
- Medical and Biotech: Delivering meticulously engineered, high-precision components and pioneering solutions for cutting-edge medical devices, consistently upholding the highest echelons of quality standards. We ensure precision and innovation in every component, adhering to supreme quality standards.
- Semiconductors: Elevating chip production and associated equipment by providing indispensable core components critical for industry success and advancement. We supply the backbone of progress in the semiconductor sector, essential for growth and innovation.
- New Energy: Actively engaging in the vigorous and sustainable advancement of innovative energy equipment, championing eco-friendly technological developments. We support the future of green technology with our commitment to sustainable progress.
- Automotive: Supplying essential components that drive innovation within the automotive sector, supporting the evolution and growth of smart and electric vehicles. We fuel the automotive industry's transformation towards smarter, more efficient vehicles.
Main Products
- We specialize in crafting non-standard customized components, extensively serving the medical, automation, semiconductor, and automotive industries. Our dedication ensures unmatched precision and exceptional quality at every turn, reinforcing our position as industry leaders.
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. Our diverse capabilities empower us to skillfully fulfill the intricate machining needs of varied industries with unparalleled precision and unmatched efficiency.
- With an impressive history spanning two decades, we expertly leverage vast production experience combined with substantial technical and process prowess. This ensures exceptional quality and forward-thinking innovation, distinguishing us as pioneers in the dynamic realm of precision engineering.
State-of-the-Art Production Equipment
High-Precision Inspection Equipment
Quality Ensurance
Remarkable Incoming Material Examination
Every single piece of raw material that arrives at our premises embarks on an exhaustive journey through a series of rigorous evaluations. This comprehensive process includes a detailed analysis of both the chemical composition and physical characteristics. Our steadfast commitment to excellence compels us to require that every supplier provides a Certificate of Origin along with a stamped Declaration of Conformity. This stringent selection process ensures that only the finest materials are selected for our precision medical machining services, guaranteeing that these materials meet the highest standards of integrity and purity, reflecting our unwavering dedication to unparalleled quality.
Thorough In-Process Quality Assurance
During our complex and critical machining operations, each component is subjected to a thorough and detailed scrutiny to ensure its dimensions and tolerances not only meet but exceed our stringent specifications. Our vigilant and continuous inspection protocol is strategically designed to detect and address potential discrepancies at the earliest possible stage. This proactive approach is essential in preventing the progression of non-conforming parts to subsequent stages, thereby significantly reducing the risk of inferior products. Consequently, superior quality is consistently maintained throughout every phase of the production process, epitomizing our relentless pursuit of excellence.
Strategic First Article Inspection (FAI)
Our First Article Inspection (FAI) is more than just a process; it is a fundamental strategy crucial in preemptively identifying and resolving potential production challenges. This forward-thinking approach is vital in preventing issues from escalating into mass production. The comprehensive and precise methodology of our FAI is integral in minimizing quality risks, ensuring that our products continually achieve the highest standards. This unwavering commitment to excellence is intricately woven into every aspect of the production cycle, ensuring that our offerings not only meet but consistently surpass the highest quality benchmarks.
Meticulous and Comprehensive Final Inspection
Before any product leaves our facility, it undergoes a meticulous and all-encompassing final inspection. This rigorous process thoroughly examines every detail, from dimensions and aesthetics to performance and any specific customer requirements. Our comprehensive inspection protocol is a testament to our relentless pursuit of quality, ensuring that every component released from our facility adheres to our stringent standards. Our commitment is unwavering in delivering nothing but the highest quality products to our valued customers, preserving our esteemed reputation for excellence and unwavering 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)