About SEIYU

A CNC partner centered on engineering clarity.

SEIYU is being built for hardware teams that want assumptions surfaced before production: what revision is controlled, what is critical, how it will be made and how it will be checked.

Our focus is not a catalog of unsupported superlatives. It is a practical manufacturing handoff between the person who designed the part and the people responsible for producing and verifying it.

What we optimize for

Clear inputs

A matched model and drawing package reduces interpretation, protects revisions and makes quotations comparable.

Useful DFM

Feedback should explain the manufacturing consequence and offer an option without silently changing design intent.

Measurable requirements

Critical features need realistic tolerances, stable datums and an agreed inspection method.

Repeatable handoff

Revision and manufacturing records matter when a prototype becomes a repeat order.

Who the service is for

Mechanical engineers, product developers, automation teams and procurement professionals sourcing custom machined components for prototypes, fixtures, equipment and repeat production.

Information we will verify with you

Before presenting company scale, certifications, machine inventory, delivery promises or industry approvals on this website, those facts should be supported by current internal records. Until then, project-specific capabilities and documentation remain subject to drawing review and quotation.

This transparency is intentional: credible manufacturing information should be verifiable, not copied from competitor websites or written only to attract a search query.

Start with the part

The most useful introduction is a clear RFQ. Send the current CAD model, controlled drawing, quantity, material, finish and inspection expectations so the manufacturing route can be evaluated on its actual requirements.

Prepare an RFQ