Important Notice Regarding COVID-19

With the recent global developments surrounding the coronavirus (COVID-19), we want you to know that health and safety is our top priority. While we remain open and fully operational as an essential manufacturer, we have made decisions and taken actions across the entire company to safeguard the health and well-being of our associates, our customers, and our community by listening to and following guidance from the experts at the Centers for Disease Control (CDC), as well as federal, state, and local authorities. Please feel free to contact us with any questions or concerns you may have.

What you can imagine can be created

We are specializing in precise transparent prototypes

INAC US INC Expert in product development
About Us

Expert in product development

INAC US is an expert in product development. We transform the ideas and imaginations of our customers into products with our innovative technology and over 20 years of experience. In addition to machining, modeling, and welding, we offer design and painting services. 

Since its establishment in 1997, INAC has expanded business on a global scale with factories in Japan, China and the United States.  Through cooperation among branches in the three countries, we offer the highest level of services and products based on customers’ needs. 

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End to end production services

Design / modeling​ : Our Design and Development Department can work directly with your designers

Design / modeling

Well–versed designers in our Design and Development Department can work directly with your designers to make proposals on prototype production as well as mass production.

High transparency machining

A high-quality transparent model would be manufactured by our unique high transparency treatment.

3D printing (SLA)

3D printing enables us to manufacture products with bottle shapes and undercut shapes, which are difficult to produce with traditional machining methods.

Vacuum casting​

Vacuum casting

Cost-effective production is possible by using this technology, when creating prototypes in small quantities, such as 5 to 100.


We have the knowledge and technology to turn your imagination into reality.