About Zhongrongda – China Prototype Manufacturing Company
Zhongrongda is a leading China Prototype Manufacturing Company specializing in rapid prototyping, CNC machining, medical device enclosure manufacturing, and beauty device enclosure solutions. We help global OEM and product development teams transform concepts into functional prototypes and low-volume production parts with fast lead times and engineering support.
Why Global Clients Trust ZhongRongDa
Our Precision Manufacturing & Custom Enclosure Solutions
ZhongRongDa is a leading manufacturer specializing in high-precision CNC machining, custom plastic processing, and Medical Device Enclosure Beauty Device Enclosures medium-to-large equipment enclosure fabrication. We focus on serving the medical device, aerospace, robotics, and laboratory industries. Our R&D and engineering teams work closely with clients to address specific project requirements, from design optimization and material selection to precision manufacturing and final assembly.
● Tailored Engineering Solutions： Customized CNC machining and enclosure designs to meet the unique structural, functional, and aesthetic needs of medical devices and aerospace components.
● Strict Quality & Standard Compliance： Rigorous processes backed by ISO 9001 and ISO 13485 certifications, ensuring strict tolerance control, material traceability, and compliance with international industry standards.
● One-Stop Collaborative Support： End-to-end support from rapid prototyping and DFM review to low-volume production and surface treatment (anodizing, sandblasting, spraying), ensuring seamless integration with client development cycles.
Engineering Drawings
3D-Modeling-DFM-Analysis
Anodizing
Surface Treatment Process
Medical & Aerospace Standard Compliance
Material Selection & Quality Control
Why Choose Our CNC Machining Services？
Zhongrongda We are a professional one-stop manufacturing factory specializing in the custom production of medium and large equipment enclosures, structural housings, precision mechanical parts, and mass production components. With integrated in-house capabilities from design, prototyping, tooling, injection molding, thick sheet vacuum forming, to CNC precision machining, we provide full-cycle manufacturing solutions for medical equipment, beauty devices, industrial robots, and automation industries worldwide.
Our core business covers custom medical device enclosures, beauty equipment housings, robot outer shells, and structural casing customization. We support rapid prototyping, low-volume trial production, and large-scale batch manufacturing. Our comprehensive production capabilities include thick sheet vacuum forming, precision plastic injection molding, mold design and development, CNC machining, lathe processing, and five-axis ultra-precision metal component manufacturing. We fully support one-stop customized development, production, and direct sales for industrial and medical equipment manufacturers.
Sets of Advanced CNC Machines, Including 5-Axis Machining Centers
Square Meters of Standard Production Workshop
Years of Precision Machining & Enclosure Customization
Advanced Machining Facility
To meet the stringent demands of the medical and aesthetic device industries, we heavily invest in state-of-the-art machining technology. Our facility is equipped with dozens of multi-axis CNC centers, ensuring we can handle complex geometries, tight tolerances, and scalable production runs without compromising on speed or precision.
| Equipment Type | Quantity | Machining Range (mm) | Tolerance / Accuracy |
| 5-Axis CNC Machining Center | 1 | 419 x 359 | $\pm 0.01$ mm |
| 4-Axis CNC Machining Center | 6 | 419 x 315 | $\pm 0.01$ mm |
| 3-Axis CNC Machining Center | 11 | 699 x 490 | $\pm 0.01$ mm |
| CNC Lathe (Turning Center) | 3 | 0 – 3000 r/min | $\pm 0.01$ mm |
| Wire EDM | 4 | 350 x 450 | High-precision cutting |
| Precision Auxiliary (Grinding/Polishing) | 3 | Various | Tool & surface finishing |
Rigorous Quality Control & Inspection
Precision machining is nothing without precise verification. We operate an independent, temperature-controlled QC lab equipped with world-class metrology equipment. From First Article Inspection (FAI) to final delivery, every critical dimension is verified using our Hexagon CMM and a comprehensive suite of precision gauges.
| Inspection Equipment | Measurement Range | Resolution / Accuracy | Brand & Notes |
| Coordinate Measuring Machine (CMM) | 700 x 1000 x 700 mm | 0.005 mm | Hexagon GLOBAL (Industry Standard) |
| Precision Height Gauge | 750 mm | 0.0025 mm | Swiss Brand |
| Optical Projector | 400 x 500 mm | 0.01 mm | Precision optical measurement |
| Surface Roughness Tester | – | 0.002 mm | Ensures flawless surface finishes |
| Comprehensive Gauge Sets | Various | Down to 0.001 mm | Calipers, Micrometers, Pin/Block Gauges, Thread Gauges |
CNC machining workshop
CNC processing area
CNC processing area2
CNC processing area3
CNC processing area3
CNC processing area6
CNC processing area9
Medical Shell Processing Workshop
Factory exterior
Component assembly area
Large shell semi-finished product assembly area
Large shell semi-finished product assembly area2
Shell processing - production area
Shell processing - quality inspection area
Shell processing - semi-finished product assembly area
Shell processing - semi-finished product assembly area2
Shell processing - semi-finished product assembly area3
Shell processing assembly area
Shell processing carving area
Engineering Certifications & Quality Standards (ISO/AS9100/ISO13485)
ZhongRongDa maintains rigorous engineering certifications, ensuring that every CNC machined part and custom enclosure meets international industry compliance requirements. With years of expertise in precision manufacturing for medical and aerospace sectors, we have obtained a comprehensive range of authoritative licenses to guarantee quality and safety.
- Global Compliance: ISO 9001 for general manufacturing, ISO 13485 for medical device quality management systems, and AS9100D certification for aerospace standards.
- Material Traceability: Full compliance with MTR (Material Test Report) requirements, ensuring medical-grade aluminum, stainless steel, and engineering plastics meet strict chemical composition and mechanical property standards.
- In-House Testing: Advanced inspection capabilities including CMM (Coordinate Measuring Machine) for ultra-precise dimensional analysis, surface roughness testing, and non-destructive testing (NDT) for critical aerospace components.
- Management Systems: Complete quality control systems from design review (DFM) to final inspection, ensuring zero defects, on-time delivery, and full compliance with global regulatory standards.
Need Assistance? We're Here for You.
If you have any questions or need assistance, our team is ready to provide support 24/7. Reach out to us through any of the methods below.
FAQ
What is your typical lead time?
Answer：
Lead time depends on part complexity and quantity. Most prototypes can be completed within 2–5 days, while low-volume production typically takes 1–3 weeks.
What file formats do you accept?
Answer：
We accept STEP, STP, IGES, STL, and PDF drawings. If you’re unsure, simply send what you have — our engineers will review and assist you.
Do you have a minimum order quantity (MOQ)?
Answer：
No, we support everything from single prototypes to small batch production, giving you maximum flexibility.
Can you handle large-size parts or enclosures?
Answer：
Yes, we specialize in manufacturing large and complex enclosures without strict size limitations, making us ideal for projects that cannot use traditional molding.
What materials can you machine?
Answer：
We work with a wide range of materials including aluminum, stainless steel, brass, copper, and engineering plastics such as ABS, POM, and nylon.
What surface finishing options do you offer?
Answer：
We provide various finishing options including anodizing, bead blasting, powder coating, polishing, plating, and more to meet both functional and aesthetic requirements.
How do you ensure quality?
Answer：
Every part goes through strict quality inspection, including dimensional checks and surface inspection, to ensure it meets your specifications.
Can you help optimize my design?
Answer：
Yes, our engineering team can provide design suggestions to improve manufacturability, reduce cost, and shorten production time.
Do you support international shipping?
Answer：
Yes, we ship globally and work with reliable logistics partners to ensure safe and timely delivery.
How can I get a quote?
Answer：
Simply send us your drawings or project details, and we will provide a quotation within 24 hours.
