Find answers to common questions or contact us for more help

Changyi Model specializes in advanced manufacturing services including CNC machining, 3D printing (SLA & nylon sintering), rapid prototyping, sheet metal processing, plastic part manufacturing, and fixture & jig production.

Our manufacturing roots date back to 2008. With over 15 years of experience, we have supported customers across multiple industries with reliable and high-precision solutions.

We serve a wide range of industries including automotive, medical devices, consumer electronics, industrial equipment, robotics, and general product development.

Yes. We work with clients globally, including the UK, Europe, North America, and Asia, providing professional communication and international shipping support.

Changyi Model is a direct manufacturer with in-house production facilities, equipment, and engineering teams. We do not outsource core processes.

You can submit your RFQ by uploading drawings or 3D files through our website, or by contacting our sales team directly via email.

We typically provide quotations within 24 hours. For simple parts, quotations may be issued even faster.

We accept common formats such as STEP, STP, IGES, STL, DWG, and PDF drawings.

No. We support everything from single prototypes to low- and medium-volume production runs.

Yes. Our engineering team provides free DFM analysis to help optimize your design for manufacturability, cost, and performance.

We follow strict quality control procedures and are certified to ISO 9001, ISO 13485, IATF 16949, and ISO 14001 standards. All parts are inspected according to customer requirements.

Lead time depends on part complexity and quantity. For urgent projects, we can deliver parts in as fast as 3 days.

All parts are securely packed using protective materials to prevent damage during international transportation.

If any quality issue is identified, our team will respond immediately and provide solutions such as rework, replacement, or corrective action based on the situation.

Yes. We offer various post-processing options including surface finishing, polishing, anodizing, painting, and assembly support.

You will need to provide 3D files or drawings, material requirements, quantity, surface finish, and any special tolerances or application details.

Yes. Our engineers can support early-stage designs with DFM feedback and prototype recommendations.

Yes. We offer rapid turnaround services for urgent projects, including 1-hour response and fast production options.

We arrange international shipping through reliable logistics partners and can ship using express, air, or sea freight based on your timeline and budget.

You will be assigned a dedicated sales or project contact to ensure clear, efficient communication throughout the project lifecycle.