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Is a Certificate of Analysis (COA) provided for every batch, and what does it include?

Yes — every batch ships with a full COA covering identity, appearance/odor, density, refractive index, optical rotation, acid/ester/carbonyl values, linalool content (GC) and safety data.

COA Content

SectionParameters
IdentityBotanical name, product code, batch number, production date
Appearance & odorColor, clarity, organoleptic profile
Physical constantsDensity, refractive index, optical rotation
ChemistryAcid value, ester value, carbonyl value, residue, linalool % (GC)
SafetyHeavy metals, residual solvents, microbiological counts (where applicable)
  • COAs are issued against QB/T 1801-2010 and ISO 17382:2007
  • Additional requested tests (e.g., specific allergens, pesticide residues) can be added on request
  • A batch sample is retained for at least 24 months for traceability

Share your required COA template and we will fill it from our test records.

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This article was published on 2026-09-07, and last updated on 2026-09-07. 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.