Chemical Substances Control

In our internal regulations, we stipulate substances with the potential to pollute the environment, and mandate notification to the person responsible for environmental management when handling such substances. In addition to keeping track of the amount of each substance handled, storage location, maximum storage volume, etc., we have SDSs*¹ and emergency response tools and conduct periodic drills to prepare for emergency situations. We are also reducing the amounts of organic solvents and other hazardous chemical substances used and promoting the use of alternatives. In fiscal 2025, we reduced the number of chemical substances by 54 compared to the reduction target of 6 substances.

We also conduct chemical substance risk assessments*² when considering purchases or making changes in operations. In fiscal 2025, 146 chemical substance risk assessments were conducted for newly adopted chemicals and to review chemicals already in use.

In accordance with the “safety data sheet (SDS) management regulations,” we regularly review SDSs and update ledgers when we handle applicable chemical substances in our departments. We thoroughly share the updated information on a company-wide basis under the management of the Quality Assurance Dept. In addition to regular annual reviews, SDSs are reviewed as appropriate when legal revisions or other changes are made.

Moreover, we have launched a new “workplace patrol activity” to monitor the chemical substance storage status. This patrol is conducted in principle within one month of the internal environment audit, which is performed twice a year based on the Environmental Management System (EMS).

The activity is intended not only to help employees acquire the necessary knowledge through training, but it also aims to further bolster the SDS management system by directly verifying and providing guidance on the effectiveness of its on-site operation.

Management is carried out according to SDS management regulations based on plant standards.
Using SDSs, we share what we are aware of regarding the dangers posed by the items we ship and the substances that we handle.

In accordance with our chemical risk assessment implementation management regulations and management standards, we take measures based on the Industrial Safety and Health Act and take necessary measures to prevent danger or health problems to workers.

Semiconductor Company conducts a workplace patrol twice a year for all the departments of the Hachioji Plant and Hanno Plant in accordance with the Chemical Substance Storage Patrol Regulations. The workplace patrol personnel appointed by the person responsible for environmental management check the storage locations and conditions, identification labels, and SDSs, among others, together with the department members in charge of chemical substance control, by using check sheets. Patrol results are reported to the person responsible for environmental management. If chemical substances are managed improperly, corrective action will be taken.

One recent activity is a workplace patrol conducted in April 2026 for 19 internal departments and chemical substance storage areas. Corrective actions were promptly implemented for issues such as “acquisition of the latest SDS” and “registration of unregistered items to the management system.” We will stay committed to maintaining an appropriate management system and reducing environmental and safety risks.

We are promoting the reduction and substitution of chemical substances in accordance with the PRTR* Act, Ordinance on Prevention of Organic Solvent Poisoning, and the Poisonous and Deleterious Substances Control Act. Of the specified substances set forth in the PRTR Act and the controlled chemical substances to be controlled according to the Tokyo Metropolitan Environmental Security Ordinance, we submit annual notifications and reports to the authorities without delay regarding those substances that are handled in quantities exceeding the threshold.

Locations covered: Tokyo Seimitsu Co., Ltd. Hachioji Plant, Hanno Plant (construction completed in July 2023), Tsuchiura Plant and the Battery Testing Center Fukushima Site [former Furudono Plant] (business transferred in October 2023)

Our Basic Environmental Policy states that we will carry out efforts to “make continuous improvements in order to reduce environmental impact,” “prevent pollution,” and “comply with environmental laws and ordinances related to business activities.” In order to establish a system for managing chemical substances contained in products in response to environmental laws and regulations and customer requirements, the Group has established the Environmental Green Initiative Team within the Sustainability Department.

We have a unique chemical substance control system in place. By managing information about chemical substances in products and legally controlled hazardous substances in an integrated manner, we quickly respond to the changing global environmental regulations and promote the elimination of hazardous chemical substances and the reduction of environmental impact across the supply chain. To operate this system requires that suppliers strictly manage chemical substances contained in procured parts and submit reports as necessary. We ask suppliers to cooperate in our cloud-based survey on chemical substances contained in products, at annual supplier briefing sessions and via communication tools.
Also, the Environmental Green Initiative Team conducts surveys for suppliers on the RoHS Directive, REACH, and other topics. They also have an analysis room equipped with an X-ray fluorescence spectrometer, gas chromatograph mass spectrometer, and other equipment, establishing a system that allows checks to be performed as needed.

In April 2003, we established our Green Procurement Guideline and have received cooperation from our suppliers in our efforts to manage chemical substances in products. As regulations on the management of hazardous chemical substances have become more stringent in recent years, in fiscal 2023, we established the Green Procurement Standards, which have strengthened the Guideline, and are working to build a system that prioritizes the procurement of environmentally- friendly parts and materials with low environmental impact.

For the Metrology Company products, we have investigated six substances of the RoHS Directive and the four phthalic acids added in 2021, determining that we ship 100% compliant products. While Semiconductor Company products are exempt from the RoHS Directive as large-scale stationary industrial equipment, we established a RoHS Analysis Room in fiscal 2018 to analyze chemical substances contained in procured parts.

Since July 2020, we have made all our products comply with the TSCA-PBT*² regulations, in addition to restricting the use of PFOA*¹-related substances that were added to the Persistent Organic Pollutants (POPs) regulations. We export 100% compliant products to areas where the regulations are enforced.