What quality control and in-house lab capabilities do you have?
Top operates in-house QC with: GC-MS (β-ionone / ionone-series floral fingerprint), GC-HS (headspace, solvent residue), refractometer / melting-point apparatus (concrete grade), Karl Fischer moisture, analytical balance (yield), plus titration and sensory panel (sweet apricot/peach osmanthus note). Heavy metals per food-safety / Cosmetic Safety Technical Specification.
Out-of-spec lots are blocked. We can arrange third-party verification (SGS, Eurofins) at buyer cost and keep retention samples for re-testing within shelf life.
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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.
