About us

We will continue to pursue high-quality products and take on challenges in order to continue to be evaluated as
“TOHO for air conditioner brass parts.”

For more than 80 years since its establishment in 1938, “TOHO” has contributed to the industry by pursuing the world’s best metalworking technology and providing high-quality metalworking products.

Since entering Thailand in 1995, we have contributed to the global air conditioning surroundings through air conditioner parts under the slogan of “superior quality” and “accurate delivery.

We manufacture our own blades, which are said to hold the key to quality. By manufacturing blades in-house using high-quality machines made in Japan, we are able to respond to detailed requests from customers and deliver prototypes in a short delivery time.

In addition, we make VA proposals and VE proposals so that we can meet the needs of our customers as much as possible. This is possible thanks to the high technological capabilities that we have cultivated over the years and state-of-the-art machines.

Naoki Tsuda


Let’s go global together with high quality air conditioner brass parts.

“TOHO” is highly regarded by many major air conditioner manufacturers for its Japanese-quality precision manufacturing and speedy delivery system. This is made possible by a system that supports the growth of each and every employee, and by promoting human resources based on their abilities.