As Tokyo Seimitsu Group products are incorporated into production equipment, we consider outstanding quality as meaning the provision of stable and reliable product quality and prompt and meticulous support quality. In order to fulfill our responsibility to protect the social status and interests of our Group customers, we are promoting initiatives to improve quality and service.

Quality Policy

At both of our plants, we set quality targets and conduct quality control in line with the quality policy set by our Quality Officer, and work to improve the quality of products and support.

Basic Philosophy


Quality Policy


We comply with laws and regulations in products and production, and contribute to society by prioritizing meeting customer requirements.


At the beginning of every fiscal year, each company reviews its quality targets (priority targets) for the previous year, and sets new quality targets for the new year to enhance product quality.


We continuously improve the performance and effectiveness of our quality management system.


We develop user-friendly products by establishing partnerships with users


We seek to improve quality through total quality control (TQC).


We seek to improve quality through partnerships with subcontractors.


We enhance customer support in business, technology, and services.


We incorporate safety, quality, and reliability in each production process to achieve stable supply.


The quality management system applies to the activities, products, and services of Semiconductor and Metrology Companies.


This quality policy is disclosed internally and externally.

Target and Result

Customer satisfaction surveys


Achieve a satisfaction rating of 94.8% or more by FY2025


Percentage of satisfactory ratings in FY2022: 93.3%

Quality Control Structure

Quality Management Committee

The Quality Management Committee consists of eight members: One Quality Officer, two Officers in Charge of Business, two Quality Control Managers, and three Sustainability Department members. The Quality Management Committee meets twice a year to review the performance, effectiveness, and appropriateness of the Quality Management System. The Quality Officer reports to the Board of Directors and receives instructions and supervision. In fiscal 2022, there were no quality management issues that required corrective actions to be taken.

Since obtaining ISO 9001* certification at the Hachioji and Tsuchiura plants in 1994, we have established the Tokyo Seimitsu Quality Management System (QMS) and have been promoting quality improvement activities through the PDCA cycle based on quality policy and quality targets.

* ISO9001

An international standard concerning systems and mechanisms of management to achieve goals in response to the needs of an organization’s customers and markets, through quality assurance for products and services. In line with the transition to ISO 9001: 2015, we obtained the certification in June 2017

Quality Control Structure

Quality Control Structure

Provision of Stable and Reliable Product Quality and Prompt and Meticulous Support Quality

Provision of Stable and Reliable Product Quality and Prompt and Meticulous Support Quality

Quality-related Education and Training

We conduct e-learning training for our employees to deepen their understanding about ISO certification and raise their awareness of quality.

Internal Quality Audits

The internal audit team conducts Internal Quality Audits twice a year at the Company. Certified auditors conduct audits in accordance with the quality manual* under the direction of the Quality Control Managers of the Hachioji and Tsuchiura Plants, who report the audit results and the effectiveness of the Quality Management System to the Quality Management Committee.

During the Internal Quality Audits performed in fiscal 2022, the auditors did not indicate that corrective actions needed to be taken.

* Quality manual

A manual that defines the procedures for managing Tokyo Seimitsu’s various products and services in accordance with the stipulations of the ISO 9001 standard

Supplier Quality Audits

Suppliers who supply many of the parts and components required for our products cooperate in the quality audits that we conduct using our ISO 9001-compliant checklists. In fiscal 2022, supplier quality audits were conducted at 11 companies (cumulative total of 208 companies), and follow-up audits were conducted for suppliers that did not comply with our quality control standards and/or quality requirements. 

Customer Satisfaction Surveys

To incorporate customer feedback into the improvement and enhancement of our products and services, we conduct customer satisfaction surveys to ascertain customer satisfaction and strive to strengthen it. The percentage of satisfactory ratings in the FY2022 customer satisfaction survey was 93.3%, and we are analyzing factors and implementing countermeasures for items that we believe need improvement.

Result of Customer Satisfaction Surveys in FY2022

Result of Customer Satisfaction Surveys in FY2022
Result of Customer Satisfaction Surveys in FY2022