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So there's Royal Kampuchea which is the pinnacle of the Cambodian scent profile.
Then there's the soon-to-be-released Thai oud "Ponlamai Thai". Thai ouds are nearly identical to Cambodian ouds (they are neighboring countries after all, and the agarwood tree species is the same).
The former is a darker, more serious and dignified scent.
The latter is bright, crisp and super friendly.
Both epitomize different facets of scent notes found in the Cambodian-Thai scent genre.
(note that samples of both are available in the drop-down selection menu... shipping is free)
I hope that helps! Please let me know if you have more questions.