関口精工 Company Overview

We provide small and medium-sized metal parts with stable quality. We handle everything in-house up to grinding and can accommodate mass production as well.

We are based in Adachi Ward, Tokyo, and manufacture metal products. Our specialty is processing using CNC automatic lathes, which make up the majority of our equipment. We pride ourselves on our ability to perform centerless grinding as well. With the arrival of the Reiwa era, we have established a specialized department and are now able to provide products for certain large parts, long parts, and mold components that were previously considered unprocessable by collaborating with partner factories. We are also capable of addressing environmental concerns and related business operations. In response to customer feedback such as "the previous processing partner is no longer available" and "we want to handle prototype projects with as few companies as possible," we will continue to make efforts. **Principles** 1. We will engage in sincere outreach activities to meet our customers' requests. 2. We will carry out our work with thorough and disciplined professionalism in each of our fields. 3. We take pride in being the elite of the industry and will continue to accumulate creativity and ingenuity to refine and improve our technology. 4. We will contribute to society through our daily work.