瑞井精工 Company Profile

We supply products that embody our heartfelt intentions, featuring high precision, high quality, and aesthetic beauty.

Ruii Seiko Co., Ltd. is a company that mainly manufactures needle rollers, cylindrical rollers, crowning rollers, as well as ultra-small shafts and precision shafts. We manage all processes in-house from material selection to ensure the shortest lead time while providing high-quality products. We select more efficient manufacturing flows to achieve cost reductions, so please feel free to contact us with your requests.