At SYMPHONY, we place importance on sustainable business practices, striving to foster sustainable business growth and returns under the principles of good corporate governance. We emphasize operational efficiency, excellent management systems, and risk management aligned with international standards.

Moreover, we aim to be an organization that conducts business with integrity, transparency, accountability and responsibility and creates shared value to all stakeholders. Our ultimate goal is not merely profit, but the mutual benefit of all parties involved in the company's business operations.

Data and Information System Security and Cybersecurity

Today, information technology has developed rapidly and plays a crucial role in business operations. Meanwhile, cyber threats have become a significant and challenging issue for organizations globally. Neglecting data and system information security and cybersecurity can not only affect stakeholders and the Company's reputation but also potentially impact business continuity.

With this, we place importance on data and information system security and cybersecurity. We set up a mechanism to create security for information assets to prevent damage to security components in accordance with business requirements and regulations for personnel and related agencies to use as guidelines for their work and prevent information loss, unauthorized disclosure of information and modifying information for use in an illegal way. It consists of 3 parts as follows:

Moreover, we have formulated policy and practical guidelines on data and information system security in compliance with applicable laws and corporate governance best practices for listed companies, including determining strategy and management approach on data and information system security and cybersecurity to enhance security of organizations at all levels. It also helps organizations to plan, prevent, detect, and respond to threats quickly and systematically. while the business can operate continuously.

Customer Relation Management

Creating customer satisfaction and confidence in the Company’s products and services is a key factor for the Company's performance because customers, as important stakeholders, play a crucial role in supporting the Company's continuous and sustainable business growth.

Hence, we are committed to meeting customer needs and expectations by delivering and maintaining a high level of product and service quality, prioritizing professional, fast, and efficient service, providing complete, accurate, and transparent information that is sufficient for decision-making.

We also ensure the confidentiality and security of customers’ personal data and offers tailored services to meet the specific needs of each customer at reasonable prices. All of this is to create

Excellent Experience

to customers from using the Company's services.

In addition to our commitment to delivering and maintaining excellent service quality, we place great importance on building, managing, and maintaining strong relationships with customers. This includes engaging customers through various business and recreational activities throughout the three phases of service: before, during, and after service. At the same time, we listen to, gather, and analyze customer needs, concerns, expectations, and feedback regarding its services. This analysis is used as a guideline for improving services to better meet customer needs.

To ensure continuous improvement in customer relationship management, we conduct a customer satisfaction survey every year.

In 2024, we achieved an average customer satisfaction score of
%

Customers’ feedback, suggestions, and recommendations will be used to enhance and further improve services to fully meet customer needs in the future.

Supply Chain Management

At SYMPHONY, our commitment to responsible business extends to our partners and suppliers.

We place great importance on supply chain management taking into account social responsibility, environmental sustainability, and good corporate governance at every stage to ensure efficiency in both cost management and the delivery of products and services. This is because effective supply chain management helps reduce risks related to costs, service continuity, service standards and quality, as well as the Company’s reputation. Additionally, it fosters collaboration in business operations, creating added value and supporting sustainable growth together.

We are committed to treating our suppliers and business partners with fairness, considering mutual benefits, and retaining long-term positive relationships. As such, we have established guidelines for interacting with suppliers and partners in the business code of conduct and have also formulated the

Procurement Policy and Practices

to oversee and ensure standard, fairness and transparency of procurement processes. This ensures that we maintain competitive edge and operational standards in working with suppliers and partners, while also fostering sustainable relationships.

We strictly adhere to our business code of conduct, practical guidelines for interacting with suppliers and partners, and the procurement policy. This includes selecting partners based on their standards for inclusion in the Approved Vendor List and conducting price comparisons before making purchases. Suppliers and partners shall be evaluated using internationally recognized standards and auditable criteria. Furthermore, we have a strict policy against corruption, bribery, coercion, embezzlement, or allowing such actions towards suppliers and partners. At the same time, suppliers and partners must not offer or accept bribes from the company, nor offer gifts or personal benefits in any form to employees as a result of dealing with suppliers or business partners.

Moreover, we promote the development of sustainable relationships with our suppliers and partners by encouraging and supporting them to strictly adhere to our

Supplier Code of Conduct

We shall avoid doing business with suppliers who are found to be violating human rights, intellectual property, or engaging in illegal or unethical behavior. Additionally, we collaborate with our suppliers and partners, including service providers, product owners, and sub-contractors, to enhance mutual capabilities through training programs, seminars, and demonstrations. These programs are offered in various formats, both online and offline, both in the short and long term, and are targeted at individuals, teams, and executives, ranging from knowledge and practical guidance that the Company has expertise to customer needs, market trends, solutions and technical aspects, safe and standardized installation, post-sales services and maintenance. This collaboration extends to improving and developing solutions, products, and services to create added value and drive innovation together. The goal is to benefit all parties, with value ultimately passing to the end customers, which may also contribute to societal development and the reduction of environmental impacts

Supplier Code of Conduct