Product application
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., our commitment transcends mere duty; it is fueled by an intense passion for the artful and scientific intricacies of precision manufacturing. Our unparalleled expertise shines brightly in the sphere of high-end component fabrication, guiding the way toward impeccable precision and advanced craftsmanship. We are at the forefront of innovation, leading the charge in developing and producing revolutionary intelligent automation equipment. Our state-of-the-art solutions cater to diverse industries, effectively addressing an array of applications, including:
- Medical and Biotech: Delivering meticulously crafted, high-precision components and pioneering solutions for cutting-edge medical devices, consistently upholding the highest standards of quality and innovation.
- Semiconductors: Empowering the semiconductor industry by providing essential core components indispensable to chip production and its supporting equipment, driving the industry's success and innovation.
- New Energy: Actively contributing to the sustainable progression of innovative energy technologies, championing eco-friendly advancements in the realm of cutting-edge energy equipment.
- Automotive: Supplying crucial components that drive innovation within the automotive industry, significantly aiding in the evolution and advancement of intelligent and electric vehicles.
Main Products
- We focus on non-standard customized components, offering exceptional service to the medical, automation, semiconductor, and automotive sectors, consistently ensuring superior precision and outstanding 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 expertly address a comprehensive spectrum of equipment categories. This extensive capability empowers us to skillfully fulfill the intricate machining needs of diverse industries with unmatched precision and remarkable efficiency.
- With a rich history spanning an impressive two decades, we leverage vast production experience combined with substantial technical and process prowess. This guarantees exceptional quality and forward-thinking innovation, setting us apart as true pioneers in the realm of precision engineering.
State-of-the-Art Production Equipment
High-Precision Inspection Equipment
Quality Ensurance
Exemplary Incoming Material Examination
Every piece of raw material that enters our meticulously maintained warehouse is subjected to a detailed and rigorous examination process. This comprehensive analysis involves an in-depth review of both chemical compositions and physical properties. Our relentless dedication to quality obliges each supplier to furnish a Certificate of Origin and a stamped Declaration of Conformity. This meticulous scrutiny ensures that only superior materials are chosen for our high-precision medical machining services. Our rigorous verification process is paramount, confirming these materials adhere to the apex of integrity and purity, echoing our uncompromising commitment to quality excellence.
Intensive In-Process Quality Assurance
Throughout our intricate and high-precision machining process, each component undergoes a thorough inspection to ensure its dimensions and tolerances not only meet but surpass our stringent specifications. Our diligent and ongoing inspection protocol is expertly crafted to identify potential defects early, preventing non-conforming parts from advancing through the production stages. This vigilant approach is crucial in reducing the risk of inferior goods, ensuring top-tier quality at every production phase, and maintaining our standard of excellence throughout the entire manufacturing process.
Strategic First Article Inspection (FAI)
Our First Article Inspection (FAI) process is a cornerstone strategy that plays a vital role in identifying and addressing production challenges from the outset. This proactive strategy is designed to prevent issues from escalating into full-scale production. The precision and thoroughness of our FAI process are critical in mitigating quality risks, ensuring our products consistently achieve the highest standards. This unwavering dedication to excellence infiltrates every facet of the production cycle, guaranteeing our products not only meet but exceed the most stringent quality benchmarks.
Meticulous Comprehensive Final Inspection
Before any product leaves our esteemed facility, it is subjected to a thorough and meticulous final inspection process. This extensive evaluation rigorously examines dimensions, visual appeal, performance, and any specific customer requirements. Our comprehensive inspection process stands as a monument to our relentless pursuit of quality, ensuring that each part dispatched from our facility aligns with our stringent standards. We are unwavering in our commitment to delivering only the highest quality products to our esteemed clients, reinforcing 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)