NF ACOUS APP (hereinafter referred to as the "APP" or "Application") is an application product provided by Shenzhen NF Acoustics Co., Ltd. (hereinafter referred to as "we" or "our company").

We attach great importance to user privacy. When you use our products and services, we may collect and use your relevant information. Through this Privacy Policy, we wish to explain to you how we collect, use, store and protect such information when you use our services, as well as the ways we provide for you to access, update, control and protect such information.

This Privacy Policy is closely related to the services you use from our company. Please read it carefully before using the APP, and use our products and services only after you fully understand and agree to it. Once you start using our products or services, you shall be deemed to have fully understood and agreed to this Policy.

1. How We Collect and Use Your Information

1.1 Information You Provide to Us

We will collect and use your personal information in accordance with this Policy. For example, when you register an account, we will ask you to provide personal information such as your email address and phone number, which will be stored under your account. If you wish to fully utilize the various third-party sharing or login functions we provide, we may also need to obtain information that your third-party accounts permit us to access, including third-party account profiles and avatars. Other information includes log information, local storage information, taking photos/videos/recordings, WiFi information, reading or modifying storage, etc. The specific purposes and uses of collecting and using such information are detailed in the following description. We will adopt compliant technologies to encrypt and store information for which you have explicitly given consent, to safeguard the security of your personal information.

1.2 Purposes and Uses of Information We Obtain During Your Use of Services

We will collect information about your use of the services. The purposes and uses of such information include:Log InformationWhen you use our services, we will automatically collect certain information and store it in server logs or write it to external storage devices of your mobile phone. Such information includes: When errors or exceptions occur during the use of the application, or when the application crashes during operation, we will write error logs to external storage, and you may choose whether to send them to us.

2. How We Store Your Personal Information

In accordance with laws and regulations, we will store user personal information collected within the territory of China domestically, and will not transfer your personal information overseas unless required to comply with laws and regulations or with your separate explicit consent. We will retain your personal information only for the period necessary to fulfill the purposes stated in this Privacy Policy and for the time required by laws and regulations.We use various security technologies and procedures to prevent information loss, improper use, unauthorized access or disclosure. For example, in certain services, we will use encryption technologies (such as SSL) to protect the personal information you provide. However, please understand that due to technological limitations and potential malicious methods, even with the best efforts to strengthen security measures, it is impossible to always guarantee 100% information security in the internet industry.

3. How We Share, Transfer and Publicly Disclose Your Personal Information

Sharing We will not share your personal information with any company, organization or individual, except in the following circumstances: We will share your personal information with other parties with your explicit consent.

We may share your personal information externally in accordance with laws and regulations, for the resolution of litigation or disputes, or as required by administrative or judicial authorities in accordance with the law. To the extent permitted by laws and regulations, it is necessary to share your personal information to protect the interests, property or safety of our affiliates or partners, you or other users, or the public from damage.

Sharing among Affiliates: We may share your personal information with our affiliates when our affiliates provide services to you or to us. However, we will only share necessary personal information, and the processing of your information by affiliates shall be subject to this Policy. If an affiliate intends to change the purpose of processing your personal information, it will seek your authorization and consent again.

Sharing with Partners: We will share necessary personal information (or SMS or incoming call numbers reported by you), or aggregated, anonymized or other non-personally identifiable information (for example, we may inform an application developer how many people have installed the application it developed) with our suppliers, service providers, consultants, agents, third-party advertisers, application developers, open platforms or other partners only for lawful, legitimate, necessary, specific and explicit purposes as stated in this Policy and with your explicit authorization and consent, in order to provide better customer service and user experience. These suppliers, service providers, consultants and agents may provide us with technical infrastructure services, analyze how our services are used, measure the effectiveness of advertisements and services, provide customer service and payment services, conduct academic research and surveys, or provide legal, financial and technical consulting services. For example, we may invite you to participate in sweepstakes from time to time. If you win a prize, we need to provide your personal information to logistics service providers to deliver prizes to you or arrange for partners to provide services. All our partners are not authorized to use the shared personal information for any purposes unrelated to the products or services.

We will sign strict data protection agreements with companies, organizations and individuals with whom we share personal information, requiring them to process personal information in accordance with our instructions, this Policy and any other relevant confidentiality and security measures. Transfer

We will not transfer your personal information to any other company, organization or individual, except in the following circumstances: 1.As our business develops, we and our affiliates may undergo mergers, acquisitions, asset transfers or other similar transactions. If such transactions involve the transfer of your personal information, we will require the new company, organization or individual holding your personal information to continue to be bound by this Policy; otherwise, we will require such company, organization or individual to obtain your authorization and consent again.

To meet the requirements of laws and regulations, legal procedures, mandatory government requirements or judicial rulings. Transfer with your explicit consent, that is, after obtaining your explicit consent, we will transfer your personal information we have collected to other parties.

Disclosure

We will publicly disclose your personal information only under the following circumstances: We have obtained your explicit consent.

We may publicly disclose your personal information when required by laws, legal procedures, litigation or mandatory requirements of government authorities.

To the extent permitted by laws and regulations, it is necessary to disclose your personal information to protect the interests, property or safety of our affiliates or partners, you or other users, or the public from damage. Other circumstances stipulated by laws and regulations. In accordance with the law, the sharing, transfer of de-identified personal information where the data recipient cannot restore and re-identify the individual shall not constitute external sharing, transfer or public disclosure of personal information. The storage and processing of such data will not require separate notice to you or your consent.

Third-Party SDK Information

Company Name SDK Name Purpose Usage Scenario Shared Information Content Sharing Method Third-Party Personal Information Processing Rules Tencent Technology (Shenzhen) Company Limited Tencent Bugly Log collection and analysis Collect crash logs and performance data AndroidID, MAC address, unique system identifiers (e.g. SIM serial number), ANDROID_ID Collected via local SDK https://privacy.qq.com/document/preview/fc748b3d96224fdb825ea79e132c1a56 Tencent Technology (Shenzhen) Company Limited Tencent QQ/WeChat SDK Social sharing function Sharing to friends, Moments, Qzone AndroidID, MAC address, device identifiers (including IMEI, IMSI), network information (including network type, carrier name, cell tower information, IP address, WiFi information), geographic location information Collected via local SDK https://wiki.connect.qq.com/ Umeng Umeng Analytics APP behavior optimization and analysis User behavior tracking and analysis IMSI, IMEI, AndroidID, MAC address, installed application list Collected via local SDK https://www.umeng.com/page/policy Baidu Online Network Technology (Beijing) Co., Ltd. Baidu Maps Location service Headphone location and finding AndroidID, MAC address, device serial number, orientation sensor, current GPS location Collected via local SDK https://tongji.baidu.com/web/help/article?id=330&type=0 JL Technology Co., Ltd. JL Home SDK Headphone function support Headphone functions based on JL chips AndroidID, MAC address, device serial number, APP self-start monitoring broadcast (for media playback only) Collected via local SDK https://cftweb.3g.qq.com/privacy/privacyPolicy?content_id=8a819da5900192725e7124d609d06327 iFLYTEK Co., Ltd. iFLYTEK Streaming Speech Recognition SDK Speech recognition service Dictating user input via headphone microphone Device ID (IMEI), device code (IMSI), IP address, Android ID, China Mobile UAID (Android only), OAID (Android only), MAC address (Linux only) Collected via local SDK https://www.iflytek.com/legal.html Shenzhen Hexun Huagu Information Technology Co., Ltd. Jiguang Push SDK Notification message push Push message notifications Device hardware information (including device model, screen resolution, hardware manufacturer, product name), OS information (OS version, system name, system language), device identifiers (IMEI, IDFA, Android ID, GAID, MAC, OAID, IMSI, MEID, UAID), network information (network type, carrier name, cell tower information, IP address, WiFi information, SSID, BSSID), device IP and geographic location, phone number, user biological trajectory, APP list, push logs Collected via local SDK https://www.jiguang.cn/license/privacy Xiaomi Mobile Software Co., Ltd. Mi Push Notification message push Message push for Xiaomi devices Device information, geographic location, network information, storage read permission (albums, media and other files) Collected via local SDK https://dev.mi.com/console/doc/detail?pid=1822 vivo Mobile Communication Co., Ltd. vivo Push Notification message push Message push for vivo devices Network information, storage read permission (albums, media and other files) Collected via local SDK https://dev.vivo.com.cn/documentCenter/doc/366 Guangdong OPPO Mobile Telecommunications Corp., Ltd. OPPO Push Notification message push Message push for OPPO devices Device-related information (IMEI, Serial Number, IMSI, User ID, Android ID, Google Advertising ID, region settings, model, battery level, OS version and language), APP package name and version, running status, Push SDK version, IP/domain connection result, current network type, notification bar permission Collected via local SDK https://open.oppomobile.com/wiki/doc#id=10288 Huawei Technologies Co., Ltd. Huawei HMS Core Instant messaging/push, account service/authentication, payment and other Huawei services Instant messaging/push, account authentication, payment Network location, network type, phone number, SIM status, IMEI, MAC address, WiFi information, external storage, network status, account info, device model, manufacturer, system version, avatar, nickname Collected via local SDK https://www.huawei.com/cn/privacy-policy Huawei Terminal Co., Ltd. Huawei HMS Sharing via Huawei Share Sharing via Huawei Share Network information, geographic location, storage read permission (albums, media and other files) Collected via local SDK https://www.huawei.com/cn/privacy-policy Beijing Qihoo Technology Co., Ltd. 360 Jiagu APK/AAB encryption Encrypting installation packages to prevent malicious cracking and decompilation Device-related information (IMEI, OAID, Serial Number, IMSI, User ID, Android ID, Google Advertising ID, region settings, model, battery level, OS version and language), APP package name and version, running status, Push SDK version, IP/domain connection result, current network type, notification bar permission Collected via local SDK https://jiagu.360.cn/#/global/help/322

4.How We Process Minors' Personal Information

We attach great importance to the protection of minors' personal information. We do not condition the provision of our products or services on age verification; however, the nature of our products and/or services requires you to be an adult with full civil capacity. If you are a child or other minor under the age of 18, we require that your parent or other guardian carefully read this Privacy Policy, and that you use our services or provide information to us only with the consent and supervision of your parent or other guardian. If you collect or submit to us minors' personal information through our products and/or services for purposes such as interacting with children, you must ensure that you have obtained prior authorization and consent from their legal guardians. 5. Changes and Revisions to the Privacy Policy Our Privacy Policy may be updated. We will not restrict your rights under this Privacy Policy without your explicit consent.

For material changes to this Privacy Policy, we will also provide prominent notice (e.g., timely notice via pop-up when the APP is updated or upgraded, or when you log in again).

6. How to Contact Us

If you have any questions, comments, suggestions or complaints regarding our Privacy Policy and the processing of your personal information, please contact us via the following method:

Contact email: juntao@nfaudio.cn

7. Effective Date of the Privacy Policy

This version of the Policy was updated on March 1, 2026 and shall take effect officially on March 1, 2026.。