User Service Agreement.

Introduction

Welcome to the services provided by 弧塔科技 (English name: ArcTower, referred to below as "we", "ArcTower" or "the Company")!

This User Service Agreement (the "Agreement") is an agreement between you and ArcTower regarding your use of ArcTower services. Please read this Agreement carefully before using our services, particularly the provisions concerning exclusions or limitations of liability, licensing of rights and use of information, consent to activate and use services, governing law and dispute resolution.

If you disagree with any part of this Agreement, please do not register for or use our services. By clicking "Agree" or "Next", registering, using our services or taking similar actions, you confirm that you have read and agree to enter into this Agreement.

1. Definitions and Scope

1.1 Definitions

• ArcTower services: The services we provide to users through websites, community platforms, software products and other means.
• User: A natural person, legal person or other organization that registers for, signs in to or uses ArcTower services.
• User content: Text, images, audio, video and other content that users upload, publish or create while using the services.

1.2 Scope

This Agreement applies to:

• ArcTower's official website and websites on related domains.
• ArcTower's community platforms.
• Software products and mobile applications developed by ArcTower.
• Other related services we provide.

1.3 Changes to the Agreement

We reserve the right to amend this Agreement in response to changes in laws and regulations or business development needs. When this Agreement changes:

• We will notify you in a prominent location on the service platform or by other means.
• The amended Agreement will take effect on the seventh day after publication.
• Your continued use of the services will be deemed acceptance of the amended Agreement.
• If you disagree with the amended Agreement, you may stop using our services.

2. Account Registration and Management

2.1 Account Registration

Registration requirements:

• You should have full capacity for civil conduct. If you are a minor, you must use the services with the consent and guidance of your guardian.
• You undertake to provide true, accurate and complete registration information.

Registration information:

• Email address (required for account verification).
• Mobile phone number (for security verification).
• Username (as an identifier).
• Password (please choose a strong password to protect your account).

2.2 Account Security

Your responsibilities:

• Keep your account information secure and do not disclose it to others.
• Update your password regularly and use a secure combination of characters.
• Contact us promptly if you notice unusual account activity.
• Be responsible for all activities under your account.

Our safeguards:

• Use encryption to protect your password.
• Provide security verification mechanisms.
• Monitor unusual sign-in activity.
• Assist with account security issues.

2.3 Account Deletion

You may request account deletion at any time:

• Submit a request through the account settings page.
• Alternatively, contact customer support at admin@axtrk.com.
• All of your personal information will be deleted after account deletion.
• Exceptions apply where laws and regulations provide otherwise.

3. Services

3.1 Types of Services

ArcTower provides the following services:

Website services:

• Information browsing and search.
• Online tools and applications.
• Technical documentation and resource downloads.

Community platform services:

• User communication and discussions.
• Content sharing and publication.
• Community activities and interactions.

Software product services:

• Various applications and tools.
• Technical solutions.
• Related technical support.

3.2 Service Models

Free services:

• Basic features are completely free to use.
• Some public-benefit services are provided free of charge indefinitely.
• Free services may have feature limitations.

Paid services:

• Subscriptions: Advanced features available through monthly, quarterly or annual subscriptions.
• One-time purchases: Software products or services purchased outright.
• Value-added services: Additional professional features or technical support.

3.3 Service Availability

Our commitments:

• Strive to make the services available 24 hours a day, seven days a week.
• For paid services, make every effort to provide a high level of service-level agreement (SLA) assurance.
• Provide public-benefit services on a best-effort basis, without necessarily guaranteeing 100% availability.

Force majeure:

• Service interruptions caused by technical failures, network outages, system maintenance or similar reasons.
• Force majeure events such as natural disasters, government actions or changes in laws and regulations.
• Service impacts caused by third-party service providers.

4. User Conduct

4.1 Basic Principles

When using ArcTower services, you must:

• Comply with the applicable laws and regulations of the People's Republic of China.
• Observe public morals and online ethics.
• Respect the lawful rights and interests of others.
• Maintain cybersecurity and public order.

4.2 Strictly Prohibited Conduct

Under laws and regulations including the Cybersecurity Law and Criminal Law of the People's Republic of China, the following conduct is strictly prohibited:

Endangering national security:

• Endangering national security or disclosing state secrets.
• Subverting state power or overthrowing the socialist system.
• Endangering national unity or undermining ethnic solidarity.
• Promoting terrorism or extremism.

Unlawful and criminal activities:

• Organizing, instigating, coercing, deceiving or inciting others to engage in unlawful or criminal activities.
• Producing or distributing methods or means for unlawful or criminal activities.
• Providing tools or venues for unlawful or criminal activities.

Disseminating harmful information:

• Producing or distributing obscene, pornographic, gambling or violent content.
• Spreading rumors, disrupting social order or undermining social stability.
• Distributing content that infringes others' lawful rights and interests, including reputation and privacy.
• Distributing content contrary to public morals.

Threats to technical security:

• Publishing or distributing computer viruses or malicious code.
• Attacking or intruding into others' computer systems.
• Illegally obtaining or disclosing others' personal information.
• Other conduct that endangers cybersecurity.

Disrupting platform order:

• Publishing false information, spam or advertisements.
• Malicious account registration or bulk operations.
• Interfering with the normal operation of the platform.
• Bypassing or undermining platform security measures.

4.3 User Content Rules

Content requirements:

• Content you publish must be truthful and lawful.
• It must not infringe others' intellectual property rights, portrait rights, privacy rights or other lawful rights and interests.
• It must not contain the prohibited harmful information described above.
• It must meet the community's standards for civil communication.

Content review:

• We have the right to review content published by users.
• We may remove, block or restrict the distribution of content that violates the rules.
• Users who commit serious violations will have their services restricted or terminated.

Reporting mechanism:

• Users may report content and conduct that violate the rules.
• We will handle reports promptly.
• Appropriate action will be taken against malicious reporting.

4.4 Consequences of Violations

If you violate the user conduct rules, we may:

• Require you to correct the violation.
• Remove content that violates the rules.
• Restrict account features.
• Suspend or terminate the services.
• Report the matter to the relevant authorities.
• Pursue legal liability.

5. Intellectual Property

5.1 ArcTower's Intellectual Property

ArcTower's intellectual property includes, but is not limited to:

• Copyright in websites, software and applications.
• Trademark rights in "弧塔科技", "ArcTower" and other marks.
• Proprietary technology, algorithms and program code.
• Platform designs, interfaces and functional concepts.
• Other intellectual property rights held in accordance with law.

No one may copy, modify, distribute or commercially use the above without authorization.

5.2 License to Use the Services

We grant you a limited, non-exclusive and non-transferable license during the term of this Agreement:

• To use our services in accordance with the terms of service.
• Solely for personal use or authorized commercial use.
• Without reverse engineering, decompiling or cracking the services.

5.3 Intellectual Property in User Content

Principles of content ownership: Depending on the particular product or service, ownership of intellectual property in user content is determined as follows:

Where users retain copyright:

• Original articles, comments and similar content published by users in the community.
• Personal works, materials and similar content uploaded by users.
• Other content expressly agreed to be owned by the user.

Where rights are shared:

• Content created using platform tools: the user holds the copyright, while the platform holds the related technical rights.
• Collaborative works: rights are allocated according to each party's contribution.

Where the platform obtains copyright:

• Specific content generated through users' participation in platform activities.
• Commissioned content whose copyright is agreed to belong to the platform.

5.4 Licenses and Permissions

Permissions you grant to us: For content you publish on the platform, you grant us:

• The right to perform technical processing necessary to provide the services.
• The right to display and distribute your content within the platform, but not to use it for commercial advertising without your consent.
• The right to conduct data analysis to improve the services.
• The right to process related data in accordance with the Privacy Policy.

Permissions we grant to you:

• You may use the content you create in the normal course.
• You may share and distribute content in accordance with platform rules.
• You enjoy the rights granted by law to copyright holders.

5.5 Handling Infringement

Protective measures:

• We respect others' intellectual property and oppose infringement.
• We maintain mechanisms for receiving and handling infringement complaints.
• We address infringing content promptly.

Reporting procedure: If you find infringing content, contact admin@axtrk.com and provide:

• Proof of the rights holder's identity.
• Evidence of ownership.
• Specific details of the infringing content.
• Contact information.

6. Privacy Protection

6.1 Privacy Policy

Your privacy is very important to us. We undertake to:

• Strictly protect the security of your personal information.
• Process your data in accordance with laws and regulations.
• Please see our Privacy Policy for details.

6.2 Data Processing Principles

We process your data according to these principles:

• Data minimization: collect only necessary information.
• Security protection: implement appropriate security measures.
• Transparency: process data openly and transparently.
• User control: respect your privacy rights.

7. Paid Services and Charges

7.1 Service Pricing

Subscriptions:

• Recurring paid services with monthly, quarterly or annual subscriptions.
• Prices are clearly displayed on the order page.
• Renewal notices are provided before expiry.

One-time purchases:

• Products purchased outright with a perpetual right of use.
• Corresponding access rights are granted upon payment.
• Subsequent free updates may be included.

Value-added services:

• Additional professional features or technical support.
• Special services available for purchase on demand.
• Prices are determined by the service provided.

7.2 Payment Methods

• Multiple mainstream payment methods are supported.
• All payments are processed through secure, encrypted channels.
• We do not store payment information.
• Official invoices are available on request.

7.3 Automatic Renewal

For subscription services:

• Automatic renewal terms will be clearly disclosed when you subscribe.
• A reminder will be sent by email or system notification five days before expiry.
• You may disable automatic renewal at any time in your account settings.
• Disabling automatic renewal does not affect service during the current subscription period.

7.4 Refund Policy

General refund principles:

• If a failure in our services prevents normal use, we have the right to attempt a repair first. A refund will be issued if the problem cannot be resolved within a reasonable time.
• Charges for the portion already used may be deducted from a refund.
• Accidental purchases may qualify within 24 hours of purchase.
• Other circumstances prescribed by laws and regulations may qualify.

Refund restrictions:

• Subscription services used for more than 30 days.
• Digital products already downloaded and used.
• Special items clearly marked "non-refundable".
• Services terminated because of violations.

Refund procedure:

1. Send a refund request to admin@axtrk.com.
2. Provide the order number and reason for the refund.
3. We will process the request within five business days.
4. Refunds will be returned through the original payment method.

7.5 Price Adjustments

Price adjustment notices:

• We reserve the right to adjust product prices.
• We will give 30 days' advance notice of price adjustments.
• Services already purchased will not be affected.
• Renewals will be charged at the new price, with advance notice.

8. Disclaimers

8.1 Services Provided As Is

Given the nature of online services, our services are provided "as is" and "as available":

Technical limitations:

• Internet technology has inherent risks, and service interruptions, delays and similar issues may occur.
• We strive to provide stable services but cannot guarantee 100% uninterrupted operation.
• System maintenance and upgrades may temporarily affect the services.

Third-party factors:

• Impacts from third-party providers, such as cloud services and network operators.
• Force majeure events, such as natural disasters, government actions and cyberattacks.
• Impacts from the user's own equipment and network environment.

8.2 Content Disclaimer

User content:

• Users are responsible for the content they publish.
• We are not responsible for the accuracy, completeness or lawfulness of user content.
• We will make our best efforts to review content but cannot guarantee detection of every violation.

Third-party links:

• The platform may contain links to third-party websites.
• We are not responsible for the content or services of those websites.
• Users visit third-party websites at their own risk.

9. Limitation of Liability

9.1 Limits on Compensation

To the maximum extent permitted by law:

Direct losses:

• Our liability for direct financial losses is limited to the fees actually paid by the user.
• To the maximum extent permitted by law, our liability will not exceed the fees you paid during your use of the services. If you paid no fees, the limit is RMB 100.

Exclusion of indirect losses: We are not liable for the following indirect losses:

• Loss of profits or business opportunities.
• Loss of data; users are advised to back up important data themselves.
• Loss of goodwill or anticipated benefits.
• Other indirect, special or punitive damages.

9.2 Exclusions of Liability

We are not liable in the following circumstances:

• Losses caused by force majeure.
• Consequences of the user's breach of this Agreement.
• Losses caused by third-party infringement.
• Issues attributable to the user, such as operating errors or equipment problems.

9.3 Exceptions

Liability that the law expressly prohibits excluding remains unaffected, including:

• Liability for personal injury.
• Losses caused intentionally or by gross negligence.
• Other liability imposed by mandatory legal provisions.

10. Suspension and Termination

10.1 Suspension of Services

We may suspend your services in the following circumstances:

• System maintenance and upgrades.
• Detection of unusual account activity.
• Requests from the relevant authorities.
• Other necessary security measures.

10.2 Termination of Services

Circumstances in which we may terminate services:

• Adjusting or discontinuing certain service features with advance notice.
• Serious breaches of this Agreement.
• Engagement in unlawful or criminal activities.
• Extended non-use of the services for more than 12 months.
• Malicious attacks on, or damage to, platform security.
• Termination required by laws and regulations.

Termination by the user:

• You may stop using the services at any time.
• You may request account deletion.
• Please back up important data yourself before deleting your account.

10.3 After Termination

After the services are terminated:

• Your account privileges will be revoked.
• Personal data will be handled in accordance with the Privacy Policy.
• Paid services will be handled in accordance with the refund policy.
• The parties' mutual rights and obligations will terminate.

11. Governing Law and Dispute Resolution

11.1 Governing Law

This Agreement is governed by the laws and regulations of the People's Republic of China, including:

• The Civil Code of the People's Republic of China.
• The Cybersecurity Law of the People's Republic of China.
• The Personal Information Protection Law of the People's Republic of China.
• Other applicable laws and regulations.

11.2 Dispute Resolution

Negotiation first:

• If a dispute arises, both parties should first seek an amicable resolution through negotiation.
• You may contact us at admin@axtrk.com.
• We will respond within 15 business days of receiving notice of the dispute.

Legal proceedings: If negotiation does not resolve the dispute:

• A claim may be brought before a people's court with jurisdiction.
• The court at the Company's place of registration will have jurisdiction.
• The parties may also choose arbitration by a separate agreement.

12. Other Provisions

12.1 Entire Agreement

This Agreement and the Privacy Policy together constitute the entire service agreement:

• They replace all prior agreements between the parties on the same subject.
• In the event of a conflict, the latest version prevails.
• Oral commitments cannot amend this Agreement.

12.2 Severability

If any provision of this Agreement is held invalid or unenforceable:

• The remaining provisions remain valid.
• The invalid provision will be replaced by a valid provision that most closely reflects its original intent.
• The Agreement as a whole remains in effect.

12.3 Reservation of Rights

Our failure to exercise a right does not constitute a waiver:

• It does not affect our ability to exercise that right in the future.
• It does not affect our right to require strict performance of the Agreement.
• A waiver of rights must be confirmed in writing.

12.4 Notices

Important notices will be sent through:

• Platform system messages.
• Your registered email address.
• SMS messages.
• Platform announcements.

13. Contact Us

If you have questions about this Agreement or need assistance, please contact us:

弧塔科技 (ArcTower)

• Customer support email: admin@axtrk.com.
• Company name: 弧塔科技 (ArcTower).
• Online support: contact us through the official website.
• Business hours: Monday to Friday, 9:00–18:00.

We undertake to give serious consideration to every user's feedback and suggestions.

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Last updated: August 25, 2025

If a version of this Agreement in another language conflicts with the Chinese version, the Chinese version prevails.