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Can you re-test or re-analyze a lot after delivery?

Yes. Top keeps a retention sample for every lot and can re-test within the shelf life on request (Brix, total sugar, total acid, cAMP/polysaccharides, patulin per GB 5009.185, micro, heavy metals).

If a buyer disputes a result, we compare our retained-sample data with the original COA; a third-party lab (SGS, Eurofins) can be engaged for an independent read, with costs allocated by outcome. Re-testing protects both sides and is a standard part of our traceability commitment.

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This article was published on 2026-09-22, and last updated on 2026-09-22. The article will be continuously updated.

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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