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Do you provide a Certificate of Analysis (COA) for every batch?

Yes — a full COA is issued for every production batch, together with a GC-MS fingerprint report, before any shipment leaves our plant.

COA Contents

SectionParameters Included
IdentityBotanical name, product code (TPS-EO-013), batch number, production date
PhysicochemicalRelative density, refractive index, optical rotation, water content
CompositionGC-MS key compounds (ocimene, linalool, leaf tiglate, jasmine lactone, terpene profile)
PurityAppearance, absence of foreign matter, no adulterants detected
SafetyHeavy metals, residual solvents, microbiological counts (on request)
StandardsGB/T methods used; T/JGE or enterprise standard reference
COA is provided in English, stamped, and traceable to the batch number printed on each drum or bottle. If your buyer or regulator requires third-party lab verification, we can arrange SGS/Intertek testing at cost.

Request a sample COA with your first inquiry so your lab can verify the format against your requirements.

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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.