Overview:

YYI Tech is a trusted manufacturer of precision CNC stainless steel parts based in China. We specialize in complex metal components that meet rigorous industrial standards. Leveraging advanced 3-, 4-, and 5-axis CNC machining technology, we deliver components with exceptional dimensional accuracy, repeatability, and corrosion resistance.

Our parts are engineered to perform in demanding environments — from aerospace assemblies to medical instrumentation.

Technical Specifications:

• Material Types:

  • SS304 – Excellent general corrosion resistance

  • SS316 – Ideal for marine and chemical applications

  • SS303/SS416 – Optimized for high-speed machining

  • Duplex Stainless – For strength-critical parts

• Machining Capabilities:

  • Tolerance: ±0.005–0.01 mm

  • Surface Roughness: Ra 0.8–3.2 µm

  • Max part size: 600mm x 600mm x 400mm

  • Minimum wall thickness: 0.5 mm

  • CNC turning, milling, threading, tapping, pocketing

• Surface Finishing:

  • Electropolishing, Passivation, Bead Blasting, Mirror Polish

  • Custom coating available on request (e.g., TiN, black oxide)

• Inspection & Certification:

  • 100% dimensional inspection

  • CMM, height gauge, thread gauge reports

  • Material certificates & RoHS/REACH compliance provided

Industries Served:

• Aerospace & UAV

• Automotive OEM & Tier-1

• Surgical & Diagnostic Medical Devices

• Semiconductor Equipment

• Industrial Automation & Robotics

Core Advantages:

• Precision Engineering – Capable of high-complexity geometry

• Confidentiality – NDA protection for all client data & designs

• Quality Control – ISO9001:2015 compliant with full traceability

• Scalability – Prototyping to 100,000+ units/month

• Efficient Production – Optimized CNC workflows for reduced lead times

Engineering FAQs

Q: What file formats do you accept?
A: STEP, IGES, DXF, DWG, STL, Parasolid (x_t/x_b)

Q: Can you help with design for manufacturability (DFM)?
A: Yes, our engineers will review and suggest optimizations before production.

Q: How do you guarantee dimensional accuracy?
A: Through in-process QC, CMM inspection, and final part validation reports.

Q: What is your lead time?
A: Typically 5–10 working days for prototypes, 15–20 for volume production.

Q: Do you provide First Article Inspection (FAI) reports?
A: Yes, upon request. PPAP documentation is also available for automotive clients.

About Dongguan YYI Technology Co., Ltd

At Dongguan YYI Technology Co., Ltd., we are dedicated to transforming your concepts into tangible innovations. With over 20 years of industry experience, our company has evolved into a leading provider of rapid prototyping and low-volume manufacturing solutions. We specialize in delivering high-quality, customized products across various industries, ensuring that each project meets the unique needs of our clients.

Our Facilities

Our state-of-the-art facilities are equipped with over 220 3D printing devices, including SLS, SLA, MJF, FDM, and PolyJet printers, as well as 10 SLM metal printing machines. Our injection molding workshop houses 50 injection molding devices, and our CNC machining workshop is equipped with 40 CNC machines. Additionally, our post-processing and quality inspection departments are staffed with over 60 professionals, ensuring that every product undergoes thorough inspection and finishing processes.

Why Choose YYI Tech?

Integrated Solutions: With over two decades of experience and a team of more than 20 professional engineers, we develop comprehensive solutions tailored to optimize cost-effectiveness and meet customer requirements.

One-Stop Service: From 3D drawing creation to rapid prototyping, small batch production, post-processing, and final inspection, we provide a seamless experience for our clients.

Customer-Centric Approach: We prioritize our clients' needs, responding quickly and efficiently to ensure the successful development and delivery of your products.

Industry Expertise: We serve a diverse range of industries, including automotive, medical equipment, industrial models, intelligent robots, smart home appliances, aviation, shipbuilding, and tooling fixtures.

Our Vision

Our vision is to be a trusted partner in your product development journey, delivering innovative solutions that accelerate time-to-market and enhance product quality. We are committed to continuous improvement and innovation, striving to exceed our clients' expectations and contribute to their success.