瀬谷製作所 Company Profile

Creating the future aimed at limitless development! We will supply with abundant achievements and excellent technology.

Seya Manufacturing Co., Ltd. is located in Hitachi City, Ibaraki Prefecture, and provides valuable die-cast products through integrated manufacturing. We supply products that meet the needs of the times with abundant experience and excellent technology, ensuring that our customers can use them with confidence. In 2010, we expanded into Suzhou, China, and are capable of providing integrated products from mold design to casting, processing, and surface treatment in China as well. Our manufacturing locations can be adapted to meet customer requests, whether in Japan or China.