Sangjin Development Co., Ltd. (hereinafter "the Company") values your personal information and complies with the Act on Promotion of Information and Communications Network Utilization and Information Protection.

Through this Privacy Policy, the Company informs you of the purposes and methods of use of the personal information you provide and the measures taken to protect your personal information.

When the Company revises this Privacy Policy, it will announce the changes through the website notice (or individual notice).

This policy takes effect from December 12, 2025.

1. Personal Information We Collect

The Company collects the following personal information for consultation and other purposes.

Online Inquiry
- Items collected: Name, contact information, email, inquiry content, etc.

2. Purpose of Collection and Use of Personal Information

The Company uses the collected personal information for the following purposes.
Performance of contracts for service provision and handling of inquiries/responses related to the provision of services

3. Retention and Use Period of Personal Information

In principle, personal information is destroyed without delay after the purpose of collection and use has been achieved. However, when retention is required by relevant laws and regulations, the Company retains member information for the period specified by such laws and regulations as follows.

Retention Items and Legal Basis for Retention of Records

• - Records on contracts or withdrawal of subscription, etc.: 3 years
• - Records on contracts or withdrawal of subscription, etc.: 5 years (Act on Consumer Protection in Electronic Commerce, etc.)
• - Records on payment and supply of goods, etc.: 5 years (Act on Consumer Protection in Electronic Commerce, etc.)
• - Records on consumer complaints or dispute resolution: 3 years (Act on Consumer Protection in Electronic Commerce, etc.)

4. Procedure and Method of Destruction of Personal Information

In principle, the Company destroys personal information without delay after the purpose of collection and use has been achieved. The procedure and method of destruction are as follows.

Destruction Procedure
Information entered by users for membership registration, etc. is transferred to a separate database (or a separate filing cabinet in the case of paper) after the purpose is achieved, retained for a certain period in accordance with internal policy and relevant laws (see retention and use period), and then destroyed.
Personal information transferred to a separate database is not used for any purpose other than retention unless required by law.

Destruction Method
Personal information stored in electronic file form is deleted using technical methods that make the records irreproducible.

5. Provision of Personal Information

The Company does not provide users' personal information to third parties in principle. Exceptions are made in the following cases:
When users have given prior consent; when required by law; or when an investigative authority requests it in accordance with procedures and methods prescribed by law for investigative purposes.

6. Hosting and Maintenance

The Company entrusts the following external specialists to operate services for the performance of its business.

• - Trustee: Three Any I&C Co., Ltd.
• - Entrusted tasks: Website and system management (hosting / maintenance)

7. Rights of Users and Legal Representatives and How to Exercise Them

Users may at any time access or correct their registered personal information and may request withdrawal of membership.
To access or correct personal information, use "Change Personal Information" (or "Edit Member Information," etc.); to withdraw membership (withdraw consent), click "Member Withdrawal" and complete the identity verification process to access, correct, or withdraw directly.
Alternatively, you may contact the personal information manager in writing, by phone, or by email, and we will take action without delay.
If you request correction of errors in your personal information, we will not use or provide that personal information until the correction is complete.
If incorrect personal information has already been provided to a third party, we will notify the third party of the correction result without delay so that the correction can be made.
Personal information that has been terminated or deleted at the user's request is processed in accordance with "Retention and Use Period of Personal Information Collected by the Company" and is not made available for any other purpose.
In the case of children under 14 years of age, legal representatives have the right to access or correct the child's personal information and to withdraw consent to collection.

8. Installation, Operation and Refusal of Automatic Collection of Personal Information

The Company operates "cookies" and other means that store and retrieve your information from time to time. A cookie is a very small text file sent by the server that operates the website to your browser and stored on your computer's hard disk.

The Company uses cookies for the following purposes.

Purpose of Use of Cookies, etc.
Analysis of connection frequency and visit time of members and non-members; identification of user preferences and interests and tracking; target marketing and personalized services through analysis of event participation and visit frequency. You have the right to choose whether to allow cookies.
Therefore, you may allow all cookies, be prompted each time a cookie is stored, or refuse to store all cookies by setting options in your web browser.

How to Refuse Cookie Settings
To refuse cookie settings, you may allow all cookies, be prompted each time a cookie is stored, or refuse to store all cookies by selecting the options in your web browser.

Setting Method
Example (Internet Explorer): Tools at the top of the web browser > Internet Options > Privacy
However, if you refuse to allow cookies, you may experience difficulties in using our services.

9. Customer Service Regarding Personal Information

The Company designates the following department and personal information manager to protect customers' personal information and handle complaints related to personal information.

For reports or inquiries regarding personal information infringement, you may contact the following organizations.

• - Korea Internet & Security Agency Privacy Violation Report Center (privacy.kisa.or.kr / 118)
• - Supreme Prosecutors' Office Cyber Investigation Department (www.spo.go.kr / 1301)
• - National Police Agency Cyber Bureau (police.go.kr / 182)