1. Introduction
HK FENTRIX CO., LIMITED ("HK FENTRIX", "we", "us", "our") operates the website ronghengce.com and a mobile management application published on Google Play and the Apple App Store (the "Apps"). This Privacy Policy explains what information we collect, how we use it, who we share it with, and what rights you have over it.
HK FENTRIX is registered in Hong Kong at Rm 701(127) 7/F NEW MANDARIN PLZ TWR B 14 Science Museum RD, Tsim Sha Tsui East, HK. We do not engage in banking, securities, insurance, or other licensed financial activity — our Apps and website are not directed at regulated financial services.
2. Information we collect
2.1 Information you give us
- Name, email, company name, and message contents when you submit the contact form on our website.
- Account profile information (name, email, role, organisation) when you sign up for the App.
- Communications you send us directly, including by email to [email protected] or [email protected].
2.2 Information collected automatically
- IP address, browser type and version, operating system, device identifiers, screen resolution, language, referring URL, pages viewed, and timestamps.
- For the Apps: device model, OS version, app version, crash logs, in-app actions, and session length.
2.3 Cookies and similar technologies
We use the following categories of cookies and local storage. You can manage preferences in your browser or device settings at any time.
- Strictly necessary — session, security, language preference. No opt-out.
- Analytics — anonymised usage statistics (page views, scroll depth). You may opt out.
- Advertising — set by third-party ad networks described in §5 to support free Apps. You may opt out (see §A.7).
2.4 Information from app users
- App-store account identifier (e.g., Apple ID or Google Play account identifier that the store exposes).
- In-app events: app opens, button clicks, screen views, and ad interactions.
- Ad-SDK events: ad requests, impressions, clicks, and conversions — handled by the relevant network under §5.
2.5 Information from third parties
- Apple App Store and Google Play (app-store analytics and review information).
- Ad networks listed in §5 (advertising identifiers, attribution signals).
- Analytics providers (anonymised usage statistics).
- Email and form processors (strictly to deliver your message to our team).
3. How we use information
- To provide, maintain, secure, and improve the website and Apps.
- To respond to your inquiries and fulfil your requests.
- To deliver advertising through ad networks that support our free Apps.
- To produce anonymised analytics and performance reports.
- To detect and prevent fraud, abuse, and security incidents.
- To comply with legal obligations and enforce our terms.
4. Legal bases (GDPR)
Where the EU/UK GDPR is in scope, we rely on the following legal bases:
- Consent — for non-essential cookies and for personalised advertising.
- Contract — to respond to inquiries and provide the service you request.
- Legitimate interests — for security, basic analytics, and product improvement — balanced against your rights.
- Legal obligation — to comply with applicable law.
5. Ad networks and SDKs
Our Apps are free and ad-supported. They use the third-party SDKs listed below. Each SDK has its own privacy practices; we list a short summary plus a link to the network's privacy page. You can opt out of personalised advertising on your device (iOS: Settings → Privacy → Tracking; Android: Settings → Google → Ads).
5.1 Google AdMob
Behaviour: ad serving, frequency capping, attribution, ad measurement. Data collected: advertising ID, IP, device info, in-app events, coarse location. Lawful basis: consent. Opt-out: device settings (see above). Privacy policy →
5.2 Google Ad Manager (AdSense)
Behaviour: ad serving, programmatic mediation, measurement. Data collected: advertising ID, IP, device info, contextual signals. Lawful basis: consent. Opt-out: device settings. Privacy policy →
5.3 Meta Audience Network
Behaviour: ad serving, audience matching, conversion tracking. Data collected: advertising ID, IP, device info, event data. Lawful basis: consent. Opt-out: device settings or Meta ad preferences. Privacy policy →
5.4 Unity Ads
Behaviour: ad serving, frequency capping, attribution. Data collected: advertising ID, IP, device info, in-app events. Lawful basis: consent. Opt-out: device settings or Unity privacy choices. Privacy policy →
5.5 AppLovin
Behaviour: ad serving, programmatic bidding, mediation. Data collected: advertising ID, IP, device info, in-app events. Lawful basis: consent. Opt-out: device settings. Privacy policy →
5.6 ironSource (Unity LevelPlay)
Behaviour: ad serving, mediation, rewarded-video mediation. Data collected: advertising ID, IP, device info, in-app events. Lawful basis: consent. Opt-out: device settings. Privacy policy →
5.7 Pangle (ByteDance)
Behaviour: ad serving, mediation, recommendation. Data collected: advertising ID, IP, device info, in-app events. Lawful basis: consent. Opt-out: device settings. Privacy policy →
5.8 Vungle
Behaviour: video ad serving, attribution. Data collected: advertising ID, IP, device info, in-app events. Lawful basis: consent. Opt-out: device settings. Privacy policy →
5.9 Chartboost
Behaviour: in-app bidding, mediation, analytics. Data collected: advertising ID, IP, device info, in-app events. Lawful basis: consent. Opt-out: device settings. Privacy policy →
5.10 InMobi
Behaviour: ad serving, mediation, audience targeting. Data collected: advertising ID, IP, device info, coarse location. Lawful basis: consent. Opt-out: device settings or InMobi opt-out. Privacy policy →
5.11 Tapjoy
Behaviour: rewarded-ad serving, offerwall analytics. Data collected: advertising ID, IP, device info, in-app events. Lawful basis: consent. Opt-out: device settings. Privacy policy →
5.12 Mintegral
Behaviour: programmatic bidding, creative rendering, attribution. Data collected: advertising ID, IP, device info, in-app events. Lawful basis: consent. Opt-out: device settings or Mintegral opt-out. Privacy policy →
5.13 Digital Turbine (formerly Digital Turbine / MediaMath)
Behaviour: programmatic bidding, ad serving, attribution. Data collected: advertising ID, IP, device info, in-app events. Lawful basis: consent. Opt-out: device settings. Privacy policy →
5.14 Liftoff
Behaviour: programmatic bidding, ad serving, attribution. Data collected: advertising ID, IP, device info, in-app events. Lawful basis: consent. Opt-out: device settings. Privacy policy →
5.15 Moloco
Behaviour: programmatic bidding, ad serving, attribution. Data collected: advertising ID, IP, device info, in-app events. Lawful basis: consent. Opt-out: device settings. Privacy policy →
5.16 Yahoo / Verizon Media
Behaviour: programmatic bidding, native ad serving, audience matching. Data collected: advertising ID, IP, device info, in-app events. Lawful basis: consent. Opt-out: Yahoo privacy choices. Privacy policy →
5.17 Smaato
Behaviour: programmatic header bidding, ad serving. Data collected: advertising ID, IP, device info, in-app events. Lawful basis: consent. Opt-out: device settings. Privacy policy →
5.18 Start.io
Behaviour: programmatic bidding, audience targeting. Data collected: advertising ID, IP, device info, in-app events. Lawful basis: consent. Opt-out: device settings or Start.io opt-out. Privacy policy →
5.19 Appodeal
Behaviour: programmatic mediation across multiple networks; aggregates the §5.1–5.18 SDKs above. Data collected: advertising ID, IP, device info, in-app events. Lawful basis: consent. Opt-out: device settings. Privacy policy →
6. Ad formats in our apps
6.1 Open-screen / splash ads
Full-screen ads shown at app launch or during major scene changes. They are typically served before the requested screen content is rendered and may be skippable after a few seconds. They are loaded from the ad networks in §5 using your device's advertising ID.
6.2 Rewarded video ads
Users opt in to watch a short video in exchange for an in-app reward (an extra shipment of in-app credit, a discount, or an additional feature use). They are clearly labelled inside the App. Completion is recorded by the ad network so the reward can be granted, and so the network can detect fraud.
6.3 Interstitial ads
Full-screen ads shown at natural transition points (e.g., after completing an in-app task). They include a close button, are time-limited, and the App limits how often they appear to avoid degrading the experience.
6.4 Banner ads
Persistent strip ads at the edge of an App screen. They are clearly separated from App content, refresh at a fixed cadence, and never expand without an explicit user interaction.
7. Regional rights
7.1 GDPR (EU & UK)
You have the right to: access your personal data; rectify inaccurate data; erase data ("right to be forgotten"); restrict processing; data portability; object to processing (including profiling); and not be subject to a decision based solely on automated processing. To exercise any of these, contact us at [email protected]. You may also lodge a complaint with your local data-protection authority.
7.2 CCPA / CPRA (California)
California residents have the right to: know what personal information we collect and how it is used and shared; delete personal information we have collected; correct inaccurate personal information; opt out of the sale or sharing of personal information; and limit the use and disclosure of sensitive personal information. We do not sell personal information. You may exercise these rights by contacting [email protected].
7.3 LGPD (Brazil)
Brazilian data subjects have the rights of: confirmation of the existence of processing; access; correction; anonymisation, blocking or deletion of unnecessary or excessive data; portability; deletion of personal data processed with consent; information about public and private entities with whom data has been shared; information about the possibility of not providing consent and the consequences; and revocation of consent.
7.4 PIPEDA (Canada)
Canadian data subjects may access their personal information, challenge its accuracy, and lodge a complaint with the Office of the Privacy Commissioner of Canada.
7.5 Australia Privacy Act 1988
Australian individuals may request access to and correction of their personal information, and may lodge a complaint with the Office of the Australian Information Commissioner (OAIC).
7.6 Singapore PDPA
Singapore individuals may request access to and correction of their personal data, and may withdraw consent for our use of their data, subject to legal and contractual constraints.
7.7 Japan APPI
Japanese data subjects may request disclosure, correction, and cessation of use of their personal information, and may lodge a complaint with the Personal Information Protection Commission.
8. Children's privacy
Our website and Apps are not directed at children. We do not knowingly collect personal information from:
- Children under 13 (US — COPPA).
- Children under 16 (EU/UK — GDPR-K), or below applicable local age.
We comply with the UK Age-Appropriate Design Code (AADC), including a high-privacy default, minimal data collection, and no use of personal data in ways that are detrimental to children's interests. If you believe we have inadvertently collected information from a child, please contact [email protected] and we will promptly delete it.
9. International data transfers
HK FENTRIX is headquartered in Hong Kong, and we use providers in multiple jurisdictions (the United States, the European Economic Area, Singapore, and elsewhere). Where personal data is transferred from the EEA, UK, or Switzerland to a country not deemed adequate, we rely on European Commission Standard Contractual Clauses (SCCs), the UK International Data Transfer Agreement (IDTA), or equivalent safeguards.
10. Data retention
We retain personal information for as long as necessary to provide the service and comply with legal obligations. Specifically:
- Contact form submissions — up to 24 months from last contact.
- App analytics — per provider policy, typically 13-26 months.
- App account data — for the duration of the account, plus 24 months.
- Server logs — 90 days.
Ad-related data is retained by the ad networks under their own retention policies (see §5).
11. Security
We employ industry-standard administrative, technical, and physical safeguards designed to protect personal information. These include encryption in transit (HTTPS / TLS 1.3), access controls, least-privilege principles, and incident-response procedures. No method of transmission over the Internet or method of electronic storage, however, is 100% secure; we cannot guarantee absolute security.
12. Changes to this policy
We may update this Privacy Policy from time to time. When we do, we will revise the "Last updated" date at the top of this page and, where the change is material, post a prominent notice on the website or — for App users — inside the App. Your continued use of the website or Apps after a change indicates your acceptance of the updated policy.
13. Contact
For privacy-related questions, requests, or complaints:
- Email: [email protected]
- Postal: HK FENTRIX CO., LIMITED, Rm 701(127) 7/F NEW MANDARIN PLZ TWR B, 14 Science Museum RD, Tsim Sha Tsui East, Hong Kong
We respond to all verifiable requests within the time limits required by applicable law (typically 30 days under GDPR, 45 days under CCPA/CPRA).