A natural plant extract manufacturer and OEM/ODM partner
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Do you provide a Certificate of Analysis (COA) with every batch?

Yes. Each batch ships with a complete COA covering: appearance, color, odor, relative density, refractive index, optical rotation, valeranone & spathulenol content (GC-MS), nardostachone, heavy metals (Pb/As/Hg), pesticide residues, microbial counts (per ISO 21149/16212/18416), CITES traceability reference and shelf life. GC-MS fingerprint chromatograms and the CITES export documentation are provided for every lot.

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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

sales@essentialoilsfactory.com
86 13367530509

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.

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