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Which plant part is the concrete extracted from?

From the fresh, just-opened jasmine sambac blossom — not leaf, stem or root. Top's COA states "raw material: fresh J. sambac flower".

Jasmine flowers are tiny and low-yield, and the fragrance peaks at night / early morning, so flowers are hand-picked at dusk and processed immediately (often the same night) into the concrete. The concrete carries the full floral wax + aroma complex (it is the "concrete", not the de-waxed "absolute"), so it is a paste/wax-like material — exactly why it is classed as a concrete rather than a fluid essential oil.

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Guilin Four Seasons Sunshine

Founded in 2006, Guilin Four Seasons Sunshine F&F Co., Ltd. is a natural plant extract manufacturer and OEM/ODM partner in Guilin, China, combining proprietary Living-Fragrance physical extraction with supercritical fluid extraction to deliver pure, traceable botanical ingredients to global food, flavor, fragrance and personal care brands. test