Basic Concept
The Nisshinbo Group's Business Conduct Guidelines include Awareness and Concern towards its environmental impact. The Group properly manages hazardous substances, implements measures to prevent leakage in accordance with the laws and regulations of each country, strives to properly manage substances contained in its products, and faithfully realizes a secure and safe society for all people.
【Main measures】
- ① Conducting appropriate control and anti-leakage measures for hazardous materials through ISO 14001 activities in accordance with the laws and regulations of each country
- ② Reducing the use of substances subject to PRTR* and reducing the release and transfer of substances subject to PRTR at manufacturing sites
- ③ In the Precision Instruments business, switching of cleaning agents used in cleaning processes to products not covered by PRTR
- ④ Provide emergency response training for chemical substance leaks
* PRTR substances: Substances subject to the Pollutant Release and Transfer Register (PRTR) system pursuant to the "Act on the Confirmation, etc. of Release Amounts of Specific Chemical Substances in the Environment and Promotion of Improvements to the Management Thereof" and reports of their amounts of release and transfer must be filed.
Please refer to "Promotion System" in "Environmental Management" for the promotion system.
Specific Initiatives of The Nisshinbo Group
6th Sustainability Promotion Plan (to be achieved by FY2027)
Reduction of the volume of PRTR substances emissions per unit of sales: Reduce by 40% or more compared to FY2014.
The Nisshinbo Group established the 6th Three-Year Environmental Goals (6th Sustainability Promotion Plan) with the fiscal year ending FY2027 as the target year, setting the promotion of environmental management as a priority activity and establishing the above KPIs to promote the reduction of the volume of PRTR substances emissions per unit of sales.
As a result of managing the reduction targets and implementing measures in a planned manner, emissions of PRTR-regulated substances per unit of sales were reduced by 57% compared to FY2014, which means the Nisshinbo Group already achieved its FY2027 target. The primary factor contributing to this reduction includes the lower emissions of PRTR-regulated substances resulting from reduced production in the Precision Instruments business.
Please refer to "Environmental Management" for details regarding of the "3-Year Environmental Targets."
Please refer to "Sustainability Promotion Plan and KPIs" for details regarding of the "Sustainability Promotion Plan."
Volume of Chemical Substances Handled
In FY2025, The volume of substances subject to PRTR handled by the Nisshinbo Group was 1,543 tons, a 2% increase from the previous fiscal year. As production in the Wireless and Communications business has increased, the volume of manganese and its compounds handled has also risen.
The main substances handled among the PRTR-listed substances are isocyanates, which are raw materials for spandex elastomers, and hexamethylenetetramine, which is a raw material for brake friction materials.
Trends in the Volume of PRTR Substances Handled
*1 Nisshinbo Holdings Inc. (the "Company") excluded TMD Group, which was a consolidated subsidiary, from the scope of consolidation, due to its transfer, which took place on November 30, 2023. As a result, data for TMD Group is included in the aggregation up to November 2023.
*2 On December 27, 2023, the Company included KOKUSAI DENKI Electric Group within its scope of consolidation, and data for the group is included from FY2024.
*3 On November 28, 2024, the Company included ARGONICS GmbH and ARGONAV GmbH within the scope of consolidation as subsidiaries in the Wireless and Communications business. However, data for these companies is not included in the FY2024 data.
Volume of PRTR Substances Handled by Business
The Chemicals business accounted for 55% of the overall volume of chemical substances handled by the Group.
Volume of Chemical Substance Emissions
In FY2025, the Nisshinbo Group's volume of PRTR substance emissions totaled 15.4 t, down 26% year on year. Volume of PRTR substance emissions per unit of sales was 0.031 kg/million yen, down 27% year on year. The main factors include a reduction in emissions of PRTR-listed substances in the Precision Instruments business.
Trends in Volume of PRTR Substance Emissions and Volume of PRTR Substance Emissions per Sales
*1 Nisshinbo Holdings Inc. (the "Company") excluded TMD Group, which was a consolidated subsidiary, from the scope of consolidation, due to its transfer, which took place on November 30, 2023. As a result, data for TMD Group is included in the aggregation up to November 2023.
*2 On December 27, 2023, the Company included KOKUSAI DENKI Electric Group within its scope of consolidation, and data for the group is included from FY2024.
*3 On November 28, 2024, the Company included ARGONICS GmbH and ARGONAV GmbH within the scope of consolidation as subsidiaries in the Wireless and Communications business. However, data for these companies is not included in the FY2024 data.
Emission Breakdown by Chemical Substance
| Chemical Substance | Discharge Amount(t) | Ratio |
|---|---|---|
| Toluene | 4.2 | 27.1% |
| Xylene | 1.8 | 11.5% |
| 1-Bromopropane | 1.4 | 9.0% |
| Trimethylbenzene | 1.1 | 7.4% |
| N-methyl-2-pyrrolidone | 0.9 | 6.0% |
| Ethylbenzene | 0.9 | 5.9% |
| Others | 5.1 | 33.2% |
Toluene accounted for the highest proportion of emitted chemical substances, at 27% of the total.
By business, the proportion of the Precision Instruments business releasing toluene, xylene, and 1-Bromopropane was 40% of the total.
Volume of PRTR Substances Emitted by Business
*1 Nisshinbo Holdings Inc. (the "Company") excluded TMD Group, which was a consolidated subsidiary, from the scope of consolidation, due to its transfer, which took place on November 30, 2023. As a result, data for TMD Group is included in the aggregation up to November 2023.
*2 On December 27, 2023, the Company included KOKUSAI DENKI Electric Group within its scope of consolidation, and data for the group is included from FY2024.
*3 On November 28, 2024, the Company included ARGONICS GmbH and ARGONAV GmbH within the scope of consolidation as subsidiaries in the Wireless and Communications business. However, data for these companies is not included in the FY2024 data.
Purification of Wastewater
In FY2025, the Nisshinbo Group's volume of suspended substances (SSs) *1 emissions per unit of sales totaled 0.14 kg/million yen, down 1% year on year. The volume of CODs*2 emissions per unit of sales was 0.27 kg/million yen, down 3% year on year. The main factors were an increase in net sales from the Wireless and Communications business, which generated relatively low emissions of SS and COD, and a reduction in production in the Textiles business, which generated high emissions.
*1 Suspended Solids (SSs): The amount of foreign substances floating in water
*2 Chemical Oxygen Demand (COD): An index of water contamination expressed as the volume of oxygen chemically required or chemically consumed
Trends in Amount of SSs Emissions per Unit of Sales and Amount of CODs Emissions per Unit
*1 Nisshinbo Holdings Inc. (the "Company") excluded TMD Group, which was a consolidated subsidiary, from the scope of consolidation, due to its transfer, which took place on November 30, 2023. As a result, data for TMD Group is included in the aggregation up to November 2023.
*2 On December 27, 2023, the Company included KOKUSAI DENKI Electric Group within its scope of consolidation, and data for the group is included from FY2024.
*3 On November 28, 2024, the Company included ARGONICS GmbH and ARGONAV GmbH within the scope of consolidation as subsidiaries in the Wireless and Communications business. However, data for these companies is not included in the FY2024 data.
Atmospheric Releases
In FY2025, the Nisshinbo Group's sulfuric oxides (SOx) emissions per unit of sales was 0.06 kg/million yen, down 11% YoY. Nitrogen oxides (NOx) emissions per unit of sales was 0.08 kg/million yen, up 8% YoY. Volatile organic compounds (VOCs*) emissions per unit of sales was 0.06 kg/million yen, down 47% YoY. Soot and dust emissions per unit of sales was 0.03 kg/million yen, up 21% YoY. VOC emissions into the atmosphere decreased due to reduced production in the Chemicals business.
PT. Nikawa Textile Industry (Indonesia), the Textiles business, stopped using coal boilers in November 2021 and eliminated the use of coal, resulting in a significant decrease in SOx and NOx emissions for the Group from FY2022.
* Volatile Organic Compounds (VOCs): Volatile organic compounds, such as toluene
Trends in Amount of SOx Emissions per Unit of Sales, Amount of NOx Emissions per Unit of Sales, Amount of VOCs Emissions per Unit of Sales and , Amount of soot and dust Emissions per Unit of Sales
*1 Nisshinbo Holdings Inc. (the "Company") excluded TMD Group, which was a consolidated subsidiary, from the scope of consolidation, due to its transfer, which took place on November 30, 2023. As a result, data for TMD Group is included in the aggregation up to November 2023.
*2 On December 27, 2023, the Company included KOKUSAI DENKI Electric Group within its scope of consolidation, and data for the group is included from FY2024.
*3 On November 28, 2024, the Company included ARGONICS GmbH and ARGONAV GmbH within the scope of consolidation as subsidiaries in the Wireless and Communications business. However, data for these companies is not included in the FY2024 data.
Specific Activities of the Group Companies
Thorough Management of Chemical Substances and the Creation of a Safe Workplace Environment
JRC Tokki Co., Ltd., regards occupational safety and health and the reduction of its environmental impact as key management priorities. Therefore, the company established a proper management system for chemical substances and other materials used in business operations.
For risk assessment, JRC Tokki adopted "Create Simple," a method recommended by the Ministry of Health, Labour and Welfare, to conduct assessments based on scientific evidence. By combining these assessment results with discussions with on-site workers, the company implements highly effective risk reduction measures closely aligned with actual on-site conditions.
Furthermore, JRC Tokki established operational standards for the handling of chemical substances and other materials. By disseminating information on hazards and proper operating procedures through the Safety and Health Committee, the company strives to enhance company-wide safety awareness and improve all management systems.
JRC Tokki will continue to improve its facilities, provide training, and expand the availability of protective equipment. The company is committed to building a safe and comfortable working environment where employees can work while maintaining good physical and mental health, thereby fulfilling their responsibility toward a sustainable society.
Training on Safety and Emergency Response for the Handling of Chemical Substances
Every October, the Environmental Affairs Office at HYS Engineering Service Inc. prepares educational materials and distributes them to all the departments that use chemical substances and to the entire company as well. The purpose of this training is to prevent poisoning incidents and workplace accidents by making sure that employees correctly understand the hazards of chemical substances and their effects on the human body, and by teaching employees proper handling and management practices.
The departments that handle chemical substances conduct emergency response drills by simulating chemical leaks caused by operational errors or earthquakes at the same time that educational materials are distributed. During these drills, the department’s chemical substance manager prepares a plan, and the drill is conducted in accordance with established company procedures with the Environmental Affairs Office verifying the implementation. Through this collaboration and mutual verification between the field and the Secretariat, awareness of emergency response procedures is further deepened as the company steadily advances its initiatives aimed at ensuring human safety, minimizing damage, and preventing secondary disasters.
Going forward, field operations and the administrative offices will continue to work together to prevent personal injuries and health hazards, minimize the environmental impact and prevent pollution, and reduce risks through strict compliance with laws and regulations.
Oil Spill Emergency Drill
GOYO ELECTRONICS CO., LTD., conducts annual emergency drills at its Akita and Sendai plants in preparation for potential chemical spills caused by natural disasters or accidents.
In May 2025, the Akita Plant conducted an emergency response drill simulating an oil leak and spill into a drainage ditch caused by a compressor failure in the nitrogen gas generator system that included damage to the tank and piping. On the day of the drill, under clear skies and guided by the Production Engineering Department, six employees involved with the nitrogen gas generators on the production floor enthusiastically participated by carefully reviewing the procedure manual to confirm the locations of the necessary equipment and the proper response methods. Through this training, GOYO ELECTRONICS personnel were able to reaffirm their understanding of the storage locations for emergency response equipment and the required work procedures. Furthermore, the company believes that the lively discussions held during the drill led to the identification and introduction of additional necessary equipment, thereby strengthening the preparedness for any unforeseen contingencies.
GOYO ELECTRONICS will continue to conduct regular training exercises and engage in activities designed to help employees master the proper response procedures in the event of an emergency.
Improving Emergency Response Capabilities
The Yashiro Plant of Nisshinbo Micro Devices Inc. developed an emergency response plan based on the identification of risks associated with chemical substances and conduct regular drills.
In the first half of 2025, the plant conducted a drill based on company response procedures by simulating a gas leak from a pipe joint during the switching operation of a hydrogen trailer. In the second half of the year, the plant conducted a similar drill based on company response procedures by simulating a chemical leak from the air valve used for injecting hydrochloric acid into the waste liquid treatment facility (coagulation sedimentation unit). Each drill was conducted with a full understanding of the properties, toxicity, hazards, and environmental impact of the leaked chemical substances. The plant also confirmed the selection, wearing, and proper use of appropriate protective equipment while utilizing the safety data sheets (SDS) placed nearby. The plant is also clarifying the roles involved in each stage-from detection of an anomaly to the emergency response and restoration and verifying whether communication and coordination proceed efficiently. Following each drill, the plant conducts a review to identify strengths, challenges, and areas for improvement, and revise procedures as necessary.
The plant will continue to engage in ongoing improvement activities aimed at reducing environmental risks and further enhancing their emergency response capabilities.
Drill for Responding to Potential Leak Accidents in Power Generation Facilities
Nisshinbo Micro Devices Fukuoka Co., Ltd., conducts emergency response drills (three times a year) in collaboration with the Power Equipment and Environmental Division (Facilities and Environment Section) and the contractor responsible for power equipment operation management in preparation for potential leakage incidents involving power equipment.
In 2025, a drill simulating a leak of filter tower backwash water (treated industrial wastewater) was conducted in February, with 17 participants. Subsequently, in June, a drill simulating a leak caused by the overturning of a drum used for recovering activated carbon-adsorbed solvents was conducted with 20 participants. In November, a drill was conducted that simulated a refrigerant leak from a refrigeration unit with 16 participants. Specifically, the November drill involved a small team to address a leak of R-1233zd(E) refrigerant from the refrigeration unit (R-1) within the plant building’s machinery room and to prevent gas diffusion under the scenario of an earthquake (seismic intensity 6+ on the Japanese scale) occurring in the Fukuoka area that caused damage throughout the premises.
Each year, Nisshinbo Micro Devices Fukuoka continues to conduct training exercises by adapting scenarios, such as chemical spills involving power generation equipment or refrigerant leaks from refrigeration systems, to ensure that company personnel are prepared for unforeseen emergencies and capable of implementing the appropriate measures to prevent secondary damage.
Emergency Response Drill for Chemical Spills
Nisshinbo Micro Devices (Thailand) Co., Ltd., conducts annual training on the basic knowledge of chemical substances and emergency response plans.
In 2025, Nisshinbo Micro Devices (Thailand) provided basic training to 892 employees involved in the storage and use of chemicals and implemented emergency response drills simulating diesel oil and hydraulic oil leaks on a two-shift system (day and night).
This training exercise was designed to simulate a night shift scenario focusing on the response required if a crack were to develop in the joint of a light oil supply pipe connected to a boiler at a plating plant. Additionally, Nisshinbo Micro Devices (Thailand) conducted training to simulate a day shift scenario focusing on the response required if a spill were to occur while transporting hydraulic fluid outdoors as part of packaging operations under the IC2 plan.
For each scenario, Nisshinbo Micro Devices (Thailand) first provides training sessions led by hazardous chemical experts who share basic information about chemical substances and chemical emergency response procedures, followed by training led by environmental staff on emergency response plans for chemical spills. Based on the established emergency response plans, Nisshinbo Micro Devices (Thailand) conducts practical tests to verify that the actual response procedures function properly.
Drill Simulating a Chemical Spill
Nisshinbo Somboon Automotive Co., Ltd., in Thailand regularly employs chemical spill response drills with the aim of preventing accidents, health hazards, and environmental pollution caused by chemical substances.
This training involves workers who handle chemical substances on a daily basis and features practical exercises designed to simulate actual accident scenarios. In August 2025, nine employees participated in the liquid chemical spill drill, and eight participated in the powdered chemical spill drill. The liquid chemical spill drill simulated a scenario in which a leak occurred while the chemical was being transported, which posed the risk of the substance flowing into a drain. The powdered chemical spill drill simulated a scenario in which chemicals fell from a pallet, ruptured, and scattered across the floor.
During the training, participants quickly reviewed the safety data sheet (SDS) to understand the characteristics and risks of the chemical substances, then they wore appropriate protective gear. In the liquid spill drill, participants used absorbent sand to prevent the spill from spreading and confirmed the procedures for safe recovery. In the powder spill drill, participants used appropriate cleaning tools to avoid direct contact with the chemical substances and swiftly carried out containment and cleanup operations. In addition, participants reviewed the entire process for managing and disposing of the collected waste in accordance with relevant laws and regulations.
Through these training sessions, Nisshinbo Somboon Automotive is continuously working to enhance each employee’s awareness of safety and the ability to respond to emergencies. Moving forward, the company will continue to build a system that encourages everyone to remain calm and to take appropriate action in the event of an emergency. Nisshinbo Somboon Automotive is committed to maintaining a safe and secure work environment.
Conducting a Chemical Spill Drill
Every April, Nisshinbo Saeron (Changshu) Automotive Co., Ltd., in China conducts hazardous waste spill drills to prevent environmental risks caused by chemical substances.
The drill simulated a leak from a storage tank or pipeline with 21 participants ranging from fieldworkers to management. First, the type of leaked chemical was identified, and the spill was contained using appropriate absorbent materials to prevent the chemical from spreading. At the same time, measures were implemented to block the flow into drainage ditches and prevent secondary contamination. Workers wore protective suits and respiratory protection while performing spill recovery operations. They also reviewed the procedures for establishing a contact point for nearby residents and reporting to environmental authorities. After the drill, issues were identified and improvements made to the placement of absorbent materials and the communication network. Rather than using the same scenario every year, drills are conducted under varying conditions, such as mixing with rainwater during the rainy season or simultaneous leaks at multiple locations-to hone response capabilities.
During the annual chemical safety training, employees learn how to read safety data sheets (SDS), employ proper storage methods, understand the effects of chemicals on the human body, and implement first aid procedures. In 2025, 35 employees participated in the training. In addition to the training required by law, Nisshinbo Saeron (Changshu) Automotive showed videos of past accidents to raise awareness of potential risks.
Through ongoing training and education, Nisshinbo Saeron (Changshu) Automotive maintains the ability to respond effectively in emergencies and has established a system to minimize the impact on the local environment.
Emergency Response Drill to Prevent Oil Spills
The Miai Machinery Plant of Nisshinbo Mechatronics Inc. conducts annual emergency response drills with the aim of reducing the risk of environmental pollution and raising employee awareness with regard to disaster prevention.
In November 2025, the plant conducted a drill simulating an oil leak (cutting oil and lubricating oil) at the oil storage facility. Thirteen on-duty staff members from the Machining Section participated in this drill. Divided into teams based on shifts, participants assessed the actual site to identify potential leak risks and determine the appropriate initial response to minimize damage. The plant verified each on-site procedure step by step, including the deployment of sandbags and absorbent mats and measures to prevent the spread of the spill. In conjunction with the drill, The plant also reviewed and updated the response manual to include more effective procedures tailored to the current facility conditions. Oil spills pose a serious risk that can have a devastating impact on local water quality and soil.
The plant will continue to promote safe manufacturing operations aimed at achieving zero environmental impact through daily preparedness and mastery of procedures.
Conduct of a Simulated Emergency Drill for a Chemical Spill
Nisshinbo Precision Instrument & Machinery Hiroshima Corporation uses organic solvents and cutting oils, which are classified as hazardous substances, in the manufacturing processes. Therefore, the company conducts an annual Chemical Spill Emergency Drill to ensure that employees are trained in the proper response procedures in the event of a spill involving organic solvents or industrial oils and to minimize damage.
In April 2025, 22 participants took part in a drill simulating an accident involving a large-scale outdoor spill of cutting oil during transport. The exercise focused on confirming the measures to prevent environmental contamination from industrial oils and greases, oil recovery methods, and emergency reporting procedures. The company simulated a spill by pouring water from a drum to represent the cutting oil, and employees practiced implementing a series of response procedures, including wiping up the spill with rags, using sandbags to block the flow into a drainage ditch, following emergency reporting procedures, and disposing of the used rags as industrial waste.
Following each training session, Nisshinbo Precision Instrument & Machinery Hiroshima reviews areas for improvement and future challenges to enhance safety awareness among all employees. The company is also working to establish a system that enables them to respond safely and promptly in the event of a leak.
Safety Training for All Employees
NISSHINBO COMPREHENSIVE PRECISION MACHINING (GURGAON) PRIVATE LIMITED in India is providing education and training in chemical substance management in accordance with the FY2026 Health and Safety Plan.
In addition to monthly training sessions and quarterly emergency response drills, the company holds daily toolbox meetings to ensure that employees conduct thorough safety checks. In particular, the company provides hands-on training in the initial response and proper handling procedures to ensure a reliable improvement in response capabilities regarding responses to cutting fluid leaks. The company also provides safety training to external contractors upon entry to the premises.
Through these initiatives, NISSHINBO COMPREHENSIVE PRECISION MACHINING (GURGAON) PRIVATE LIMITED is promoting accident prevention and raising safety awareness.
Risk Assessment for Transporting Drums (Waste Oil)
The Industrial Waste Facility at the Susono Plant of Nanbu Plastics Co., Ltd., had planned to conduct training on oil spills at the waste oil storage area; however, since measures were already in place to prevent oil spills and the risk of a spill was low, the decision was made to conduct risk assessments on the transportation of waste for which no specific rules had been established.
Three times a year (before long holidays), The plant transports drums containing waste oil collected from the worksite to the waste oil storage area at the industrial waste disposal facility. The company loads three drums secured to a pallet onto a reach truck for transport. Since the risk of oil leakage increases if the drums tip over during transport, the plant reviewed its measures to prevent tipping. Nanbu Plastics examined the actual transport process and conducted a risk assessment. The plant selected a recommended pallet, chose straps to bundle the three drums together as a fall prevention measure, confirmed the transport route, established precautions and rules for transport, created an operating procedure manual, and disseminated it to workers and the responsible departments. Additionally, the plant installed oil-absorbent tubes and sheets to be used in the unlikely event of a fall and created a material safety data sheet (MSDS). The establishment of transport rules and an operating procedure manual reduced the risk of falls and minimized the risk of oil spills.
Disaster Drill Simulating Leaks and Fires Caused by a Major Earthquake
The Tokushima Plant of Nisshinbo Chemical Inc. is located along the Imagire River, a tributary of the Yoshino River system. Because the plant houses facilities that handle hazardous materials, it conducts disaster prevention drills every year.
In FY2025, the plant conducted evacuation drills simulating a tsunami triggered by a magnitude 6.0 earthquake, as well as drills simulating hazardous material leaks and fires, with 30 participants. The hazardous material leak drill simulated a solvent leak caused by a broken hose during the unloading of a tanker truck, which resulted in an injured worker. Participants rescued the injured person, guided external contractors to the evacuation site, and implemented measures to prevent the spill from spreading by placing sandbags and using absorbent sheets to recover the solvent. The fire drill involved water discharge training using a fire hydrant. In order to prevent the solvent from flowing outside the facility, plant personnel visually inspected the oil-water separators and storm drains connected to the Imagire River to ensure that no solvent had entered the drainage system.
By conducting these drills on a regular basis, Nisshinbo Chemical can reaffirm each person’s role and the company procedures required in the event of a disaster, and the company will strive to improve safety by identifying and addressing any issues with emergency equipment and manuals.
Training on the Handling of Chemical Substances
Nisshin Environmental Planning Inc. conducted a drill simulating three potential emergency scenarios involving the chemical substances it handles.
The first drill simulated a fire caused by a flammable gas (acetylene) leaking from a central piping system and igniting. Conducted in October 2025 by three members of the Environmental Investigation Department, the drill used standard operating procedures and checklists to identify areas for improvement; however, no issues were found. The second drill, conducted by four members in November 2025, simulated an accidental spill of formic acid-used for sample pretreatment-into a sink. The third drill, conducted by six members in November 2025, simulated an accidental spill of acidic waste liquid into a sink. No areas requiring improvement were identified in either drill.