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Quality Assurance System

Toyo Seikan Group Quality Policy

Basic philosophy

Toyo Seikan Group continuously practices quality assurance activities to provide useful and safe products, systems, and services for society, as well as to ensure customer peace of mind and satisfaction.

behavioral guidelines

  • We will make fair and prompt decisions and take action from the perspective of society and our customers.
  • We will promote digital transformation in quality assurance and work to improve reliability based on data.
  • We will ensure thorough quality compliance through honest dialogue with all stakeholders.
  • We comply with all relevant laws and safety standards and provide products and services of reliable quality.
  • We are committed to continuously improving our quality assurance system, anticipating changes in the environment.

Quality assurance and product safety initiatives

Building a management system

To ensure stable quality and continuous improvement in products, systems, and services, each operating company of Toyo Seikan Group has established a quality management system (ISO9001). In addition, each company that manufactures and sells food containers has established a food safety management system (FSSC22000), working to provide safer products and improve reliability in the food chain.
In particular, Toyo Seikan, TOYO GLASS, and Mebius Packaging have established an "Integrated Management System (TMS)" that integrates the operation of three management systems: quality, food safety, and the environment (ISO14001). By integrating the management systems, we have eliminated redundant operations, broadened our perspective from partial optimization to overall optimization, and are promoting manufacturing that is trusted by customers by using a "living system" that combines the management system with business activities.

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quality education

Within Toyo Seikan Group, each operating company provides quality education tailored to the characteristics of its business and products.In addition, by engaging in various improvement activities using quality control methods, we strive to maintain and improve employee sensitivity to quality.

Response to quality risks shared across the Group

Toyo Seikan Group works together with group companies to share and address issues related to measures to address various quality risks, such as serious product defects, quality fraud, intentional product contamination, violations of laws and contracts, product guarantees in the event of major disasters, and crisis responses to quality emergencies.The Group's direction is aligned and activities are carried out at the Group Quality Meeting, which is attended by quality assurance officers and quality assurance department managers from the holding company and each operating company.
In particular, the root cause of problems that significantly damage the trust of stakeholders is closely related to employees' quality awareness. Therefore, we are working across the Group to maintain and improve quality awareness by objectively visualizing this through quality awareness surveys.

Initiatives by Operating Companies

Initiatives for Fiscal Year 2025

Quality and food safety education

Toyo Seikan systematically provides training mainly for young employees in the quality departments of factories and subsidiary companies, led by veteran employees from the headquarters Quality Assurance Department. The curriculum currently consists of 11 items, with content changed every year to foster young employees. By incorporating classroom learning, practical training, and group work, the education is lively.
In fiscal year 2025, education was provided on (1) quality control and statistical methods, (2) learning from quality failure cases, and (3) correctness of measurement and measurement management systems, with a total of 63 participants attending. Additionally, in November, during National Quality Month, we provide quality and food safety education to all employees working at headquarters and factories under the theme of "Safe and Secure Manufacturing of Packaging Containers."

Educational Scene: ③ Accuracy of Measurement and Measurement Management Systems (Lectures and Group Work)

Educational Scene: ③ Accuracy of Measurement and Measurement Management System (Practical Training)

Efforts to maintain and improve quality awareness and knowledge

At Tokan Kogyo, we believe that creating product quality together is the very attitude we embody, and we are engaged in activities aimed at quality improvement. From fiscal year 2025, we launched the "Quality Work up AWARDS," an award system that honors various employee quality improvement activities. Additionally, to improve employees' quality literacy, we are enhancing basic quality training with the goal of passing the Level 3 QC Certification and providing a variety of educational environments. So far, 281 people have taken the course.

Efforts to maintain and improve quality awareness and knowledge

Scenes from basic quality training.

A good proposal comes to fruition! A new initiative utilizing "Mango Tree"

TAIYO PLASTIC CORPORATION OF PHILIPPINES revised its suggestion system guidelines and reviewed its awards. As part of this initiative, they posted a close-up photo of a mango tree, a representative tree of the region, at the entrance to the molding area and introduced a system where mangoes are added each time a good suggestion is submitted.

Mango Tree

We held a company-wide presentation of improvement suggestions.

Nippon Closures held a company-wide presentation of improvement proposals at headquarters in October. In addition to two representatives from each of the four factories and the mold technology department presenting improvement proposals, volunteer members from headquarters introduced their activities, environmental initiatives were recognized, and the president gave a commentary.

Company-wide presentation of improvement proposals

Implementation of training to improve the ability to use the seven quality control tools.

Nippon Tokan Package held training in September with external instructors on seven quality control tools. Thirteen members from the Quality Assurance Department participated and learned key points for creating characteristic factor diagrams and histogram analysis.

Training to improve proficiency in using the seven tools of quality control

Efforts to digitize business forms and documents

Nippon Tokan Package is working on digitizing quality records used in manufacturing sites. In August 2025, we introduced "i-Reporter" at the Osaka factory and began digitizing forms. This system automatically detects omissions and abnormal values and displays alerts. Additionally, the time required for printing and circulation has been reduced, enabling faster reporting.