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![Rian Febrian - 'Isothermal Expansion' [Ringtone]](//ringtones.com/cdn/shop/files/rian-febrian-isothermal-expansion-ringtone-cover.jpg?v=1784357064&width=760)
![Rian Febrian - 'Isothermal Expansion' [Ringtone]](http://ringtones.com/cdn/shop/files/rian-febrian-isothermal-expansion-ringtone-cover.jpg?v=1784357064&width=760)
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Isothermal Expansion
RI
2026
Keep Rian Febrian's 'Isothermal Expansion' on repeat: as your ringtone, it plays on every call. Officially licensed and ready to download in seconds.