Effective Date: November 12, 2025
QuestNova Technology L.L.C. ("we", "us", "our") operates the website https://research.qingnan.tech (the "Service").
This Cookie Policy explains what cookies are, how we use them, the types of cookies we use (i.e., the information we collect using cookies), how that information is used, and how you can control your cookie preferences.
For further information on how we use, store, and keep your personal data secure, see our Privacy Policy.
Cookies are small text files that are stored on your device (computer, smartphone, tablet) when you visit a website. They are widely used to make websites work more efficiently, as well as to provide information to the website owners. Cookies help us recognize your device and remember information about your preferences or past actions.
Cookies can be "persistent" or "session" cookies. Persistent cookies remain on your device for a set period of time or until manually deleted, while session cookies are temporary and disappear when you close your browser.
We use cookies and similar tracking technologies for the following purposes:
We classify cookies into the following categories:
These cookies are strictly necessary for the operation of our Service. They enable core functionality such as security, network management, and accessibility. You cannot opt-out of these cookies, and we do not require your consent to place them on your device.
These cookies help us understand how visitors interact with our Service by collecting information about the pages visited, time spent on the site, and any error messages encountered. This data is aggregated and anonymous.
These cookies enable enhanced functionality and personalization, such as remembering your preferences, username, and language settings. They may be set by us or by third-party providers whose services we have added to our pages.
These cookies track your browsing habits and are used to deliver advertisements more relevant to you and your interests. They may also limit the number of times you see an advertisement and help measure the effectiveness of advertising campaigns.
The table below details the specific cookies we use and their purposes:
| Cookie Name | Type | Purpose | Duration | Provider |
|---|---|---|---|---|
qn_session |
Essential | Maintains user session state | Session | QuestNova |
qn_auth_token |
Essential | Authentication and security | 30 days | QuestNova |
qn_preferences |
Functional | Stores user preferences | 1 year | QuestNova |
_ga |
Performance | Google Analytics tracking | 2 years | |
_gid |
Performance | Google Analytics session tracking | 24 hours | |
_stripe_mid |
Essential | Fraud prevention for payments | 1 year | Stripe |
We allow certain third-party service providers to place cookies on your device for analytics and advertising purposes. These include:
We do not control these third-party cookies, and their use is subject to the privacy policies of the respective providers. We recommend reviewing these policies:
You have the right to decide whether to accept or reject cookies. You can exercise your cookie preferences by:
Most web browsers allow you to control cookies through their settings. You can configure your browser to:
Please note that disabling essential cookies may affect the functionality of our Service.
For analytics and advertising cookies, you can use the following opt-out tools:
When you first visit our Service, you will see a cookie consent banner. You can manage your preferences through this tool at any time by clicking the cookie settings link in the footer of our website.
Cookies are retained on your device for the duration specified in the cookie table above. Once a cookie expires, it will be automatically deleted. You can also manually delete cookies at any time through your browser settings.
Information collected through cookies may be retained in our systems for up to 24 months, after which it is aggregated or anonymized.
We may update this Cookie Policy from time to time to reflect changes in our practices, technology, or legal obligations. We will notify you of any material changes by:
We encourage you to review this policy periodically to stay informed about our use of cookies.
If you have any questions about our use of cookies or this Cookie Policy, please contact us:
QuestNova Technology L.L.C.
8 The Green suite r, Dover, DE 19901, USA
Email: contact@qingnan.tech
Phone: (+86)18830384298
For data protection inquiries, please email us at privacy@qingnan.tech.