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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 (botanical name, product code, batch number, production date), appearance/odor, color, relative density, refractive index, moisture, acid value, peroxide value, GC-MS composition summary and safety data (heavy metals, microbiology where applicable), issued against the GB/T 44288-2025 framework and GB/T 14454/14455 test methods.

COA Contents

BlockItems
IdentityBotanical name, product code, batch, production date
PhysicalAppearance, color, density, refractive index
ChemicalMoisture, acid value, peroxide value, GC-MS summary
SafetyHeavy metals, residual solvents, microbiology (as applicable)
ReferenceGB/T 44288-2025 framework + company QC limits
  • Additional tests (allergens, pesticide residues, specific compounds) on request
  • Retained samples stored for at least 24 months for traceability
  • COA is issued by our quality laboratory before shipment

Request the batch COA with your quotation for review.

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บทความนี้เผยแพร่เมื่อ 2026-09-07 และอัปเดตล่าสุดเมื่อ 2026-09-07 โดยจะมีการปรับปรุงเนื้อหาอย่างต่อเนื่อง

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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.