Cookie Policy
Strictly necessary, analytics and marketing cookies used on selsil.com, their duration and providers, and how to manage your cookie choices.
Last updated: · Version 2
This Cookie Policy explains which cookies and similar technologies (pixels, tags, local storage) are used on selsil.com, for what purpose and for how long, and how you can manage your choices. Details on the processing of your personal data are in the Privacy Notice.
1. What are cookies?
Cookies are small text files that a website stores in your browser. Pixels and tags are small pieces of code on a page that send information about your visit to a service provider. First-party cookies are set on the selsil.com domain; third-party cookies are set on the provider's own domain.
2. Categories of cookies we use
Strictly necessary cookies
Required for the website to work securely and to remember your cookie choice. They do not require consent and cannot be switched off. Videos on the website open in YouTube's privacy-enhanced player (youtube-nocookie.com) only when you press play; the player stores data in your browser only then, to deliver the video you explicitly requested.
Analytics cookies
Measure statistically how pages are used, via Google Analytics 4. Used only with your consent.
Marketing and advertising cookies
Used to measure the results of our Google Ads, Meta (Facebook and Instagram), ChatGPT Ads and TikTok campaigns, to recognise visitors who come from an ad and to show relevant ads. The Meta Pixel, ChatGPT Ads Measurement Pixel and TikTok Pixel are loaded only if you consent to this category. Used only with your consent.
3. List of cookies
The table below shows every cookie and local storage entry that can be set on our website. It is generated automatically from the cookie register used by the website.
| Name | Category | Provider | Purpose | Duration | Party | Country of processing |
|---|---|---|---|---|---|---|
| _ttp | Marketing and advertising cookies | TikTok Technology Limited / TikTok Information Technologies UK Limitedselsil.com | TikTok Pixel: browser identifier used to link visits with ad conversions. | 13 months | First party | Ireland / UK |
| ttcsid_* | Marketing and advertising cookies | TikTok Technology Limited / TikTok Information Technologies UK Limitedselsil.com | TikTok Pixel: stores a session identifier for ad measurement. | 13 months | First party | Ireland / UK |
| ttcsid_ | Marketing and advertising cookies | TikTok Technology Limited / TikTok Information Technologies UK Limitedselsil.com | TikTok Pixel: stores a session identifier for ad measurement. | 13 months | First party | Ireland / UK |
| ttclid | Marketing and advertising cookies | TikTok Technology Limited / TikTok Information Technologies UK Limitedselsil.com | TikTok Pixel: matches a TikTok ad click with a conversion. | 13 months | First party | Ireland / UK |
| _ttp | Marketing and advertising cookies | TikTok Technology Limited / TikTok Information Technologies UK Limitedtiktok.com | TikTok: stores a browser identifier on its own domain for ad measurement. | 13 months | Third party | Ireland / UK |
| _pangle | Marketing and advertising cookies | TikTok Technology Limited / TikTok Information Technologies UK Limitedanalytics.pangle-ads.com | TikTok ad network: used for ad delivery and conversion measurement. | 13 months | Third party | Ireland / UK |
| selsil_consent | Strictly necessary cookies | Sel Dış Ticaret ve Kimya San. A.Ş.selsil.com | Stores your cookie preferences (analytics and marketing permissions), the date of your choice, the policy version and the anonymous identifier of your consent record. Without it your choice cannot be remembered and would be requested on every page. | 12 months | First party | Türkiye |
| yt-*(local storage) | Strictly necessary cookies | Google LLC (YouTube)youtube-nocookie.com | Written only when you start a video yourself, by YouTube's privacy-enhanced player (youtube-nocookie.com) to store playback settings. Nothing is written until you start a video. | Until deleted | Third party | USA |
| _ga | Analytics cookies | Google LLC / Google Ireland Limitedselsil.com | Google Analytics 4: assigns a random client ID to your browser to statistically distinguish visits and page views. | 2 years | First party | USA |
| _ga_* | Analytics cookies | Google LLC / Google Ireland Limitedselsil.com | Google Analytics 4: keeps session state and session count. | 2 years | First party | USA |
| _gcl_au | Marketing and advertising cookies | Google LLC / Google Ireland Limitedselsil.com | Google Ads: used to link ad clicks with conversions on the site (form submission, phone click). | 90 days | First party | USA |
| _gcl_aw | Marketing and advertising cookies | Google LLC / Google Ireland Limitedselsil.com | Google Ads: stores the click identifier (gclid) when you arrive by clicking a Google ad. | 90 days | First party | USA |
| _gcl_dc | Marketing and advertising cookies | Google LLC / Google Ireland Limitedselsil.com | Google Ads / Display & Video: stores the identifier of display ad clicks. | 90 days | First party | USA |
| IDE | Marketing and advertising cookies | Google LLC / Google Ireland Limiteddoubleclick.net | Google advertising network: kept on Google's own domain for ad delivery, frequency capping and conversion measurement. | 13 months | Third party | USA |
| test_cookie | Marketing and advertising cookies | Google LLC / Google Ireland Limiteddoubleclick.net | Google advertising network: set briefly on Google's own domain to check whether the browser supports cookies. | 15 minutes | Third party | USA |
| _fbp | Marketing and advertising cookies | Meta Platforms, Inc. / Meta Platforms Ireland Limitedselsil.com | Meta Pixel: first-party identifier that recognises your browser for Meta ad measurement and audience building. | 90 days | First party | USA |
| _fbc | Marketing and advertising cookies | Meta Platforms, Inc. / Meta Platforms Ireland Limitedselsil.com | Meta Pixel: stores the click identifier (fbclid) when you arrive by clicking a Facebook or Instagram ad. | 90 days | First party | USA |
| fr | Marketing and advertising cookies | Meta Platforms, Inc. / Meta Platforms Ireland Limitedfacebook.com | Meta: used on Meta's own domain for ad delivery and measurement if you are logged in to Facebook. | 90 days | Third party | USA |
| __oppref | Marketing and advertising cookies | OpenAI OpCo, LLCselsil.com | ChatGPT Ads Measurement Pixel: stores the click reference (oppref) when you arrive from an ad in ChatGPT and links it to conversions on later pages. | Set by the provider | First party | USA |
| __obref | Marketing and advertising cookies | OpenAI OpCo, LLCselsil.com | ChatGPT Ads Measurement Pixel: browser reference used to match the same conversion received from the browser and from the server. | Set by the provider | First party | USA |
| __cf_bm | Marketing and advertising cookies | OpenAI OpCo, LLCopenai.com | ChatGPT Ads Measurement Pixel: set on OpenAI's domain by OpenAI's infrastructure provider Cloudflare to distinguish automated (bot) traffic in requests to the pixel servers. | 30 minutes | Third party | USA |
| _cfuvid | Marketing and advertising cookies | OpenAI OpCo, LLCopenai.com | ChatGPT Ads Measurement Pixel: set on OpenAI's domain by OpenAI's infrastructure provider Cloudflare to apply rate limiting to requests to the pixel servers. | Until the browser session ends | Third party | USA |
| __oaiq_consent | Marketing and advertising cookies | OpenAI OpCo, LLCselsil.com | ChatGPT Ads Measurement Pixel: lets the pixel remember your consent to marketing cookies; set only after you consent. | Set by the provider | First party | USA |
4. What happens if you do not consent?
If you do not consent to analytics and marketing cookies, these cookies are not set in your browser and the Meta Pixel, ChatGPT Ads Measurement Pixel and TikTok Pixel are not loaded. Two kinds of processing nevertheless continue independently of your cookie choice:
- Google Consent Mode: Google receives limited signals, without any cookie being set on your device and without an identifier that identifies you, for aggregate measurement and conversion modelling. In this mode the Google click identifier (gclid) may be passed from page to page by appending it to link addresses on the site, so that an ad click can still be measured.
- Server-side advertising measurement: page view, product view, phone click and form submission events are sent without cookies from our server to Meta and OpenAI. The full list of data, the legal basis and how to object are in section 3.5 of the Privacy Notice.
5. How to manage your choices
- When you first visit, you can choose "Accept all", "Reject all" or "Manage preferences" in the notice. Rejecting does not prevent you from using the website.
- You can change your choice or withdraw your consent at any time:
- The same option is available at the bottom of every page as "Cookie Settings". When you withdraw consent, the related first-party cookies are deleted and the page reloads.
- Your choice is stored for 12 months; after that, or if this policy changes significantly, you will be asked again.
- You can also delete or block cookies in your browser settings. If you block strictly necessary cookies, your choice cannot be remembered.
- The advertising settings in your Google, Meta and OpenAI accounts are also available to you.
6. Contact
Questions about cookies and your personal data can be sent to kvkk@selsil.com.tr.