> 翻訳に関する注意事項: この文書は法的正確性を期すため、英語で提供されています。お客様の言語版は現在準備中であり、まもなく更新されます。不一致がある場合は、英語版が優先されます。

Privacy Policy

This site miloengai.com is committed to protecting user privacy. General-purpose engineering tools are free; most single-point calculator inputs stay on your device (except the multi-fluid fluid-properties tool, which runs CoolProp on our servers). Optional pro calculator entitlements, digital asset purchases, and platform credit packs use account records described below. We follow the "Data Minimization" principle.

1. Information Collection

We only collect minimal information in the following specific scenarios:

• Communication: When you voluntarily email `hello@miloengai.com`, we record your email address and content solely to reply. This data is not used for marketing.
• Leisure entertainment & entertainment coins: When you use leisure features in the user dashboard, we record an entertainment-coin ledger (grants, entry debits, adjustments), separate from platform credits. Not used for marketing.
• Payment Security: All tips are processed securely by third-party platforms. We do not access or store your payment card numbers or financial information.
• Maintenance Logs: For server security, we record basic access logs (including encrypted IP, browser type, and access time), which are generally retained for no more than 30 days and not linked to personal identity.

2. Data Processing & Storage

• Calculators stay local (default): General calculators do not require registration; typical single-point inputs and results are processed on your device and are not sent to our servers. Exception: fluid-properties single-point lookups are computed server-side (CoolProp); we process the request to return properties and do not use it for marketing. Batch table exports (steam and multi-fluid) and pro unlocks / digital asset downloads require sign-in; we store entitlement, credit, and export-audit records only.

• Security & Encryption: All data transmissions are encrypted via SSL to ensure secure access.

3. Information Use & Sharing

We promise not to sell or rent the limited information we collect to any third party. Collected information is used solely to:

1. Optimize tool algorithm precision;
2. Maintain website operation security;
3. Reply to your technical inquiries.

4. Legal Compliance

• GDPR Adherence: For international users, we refer to the EU General Data Protection Regulation (GDPR) standards for data protection.
• China Compliance: For users in China, this policy strictly complies with the Personal Information Protection Law (PIPL) of the People's Republic of China.

5. Policy Updates

As we add more tools, we may fine-tune our privacy policy. Any significant changes will be prominently highlighted on this page.

If you have any questions regarding privacy, please contact us at `hello@miloengai.com`.