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Is a Certificate of Analysis provided with every batch?

Yes — every batch ships with a full Certificate of Analysis (COA) covering sensory, physicochemical, compositional (GC-MS), heavy-metal and safety parameters, all tied to the batch number for traceability.

COA Content

SectionParameters
SensoryAppearance, color, odor
PhysicochemicalDensity, refractive index, acid value, ester value, solubility
CompositionGC-MS key compounds incl. phenylethyl alcohol content
SafetyPb, As, residual solvent, microbiological (on request)
IdentityBatch number, production date, harvest origin, shelf life
  • COAs are issued in English; Chinese or other languages on request
  • Retained samples of every batch are stored for at least 24 months for re-testing
  • Third-party laboratory reports can be arranged for specific parameters if required

Give us your email and we will send a sample COA of the current batch.

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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.