A natural plant extract manufacturer and OEM/ODM partner
FAQ Header

Can you support third-party laboratory testing?

Yes — we support independent testing by accredited laboratories (SGS, Intertek, Eurofins, CNAS labs or your nominated lab).

Test TypeTypical Items
CompositionGC-MS profile, markers
SafetyHeavy metals, pesticides, allergens
MicrobiologicalTPC, yeast & mold, pathogens
Physico-chemicalpH, specific gravity, refractive index
SpecialOrganic residue, radiometric, stability
We arrange sample handover with chain-of-custody, provide batch information for traceability, and share our internal COA as the comparison baseline. Lab costs are paid by the buyer; we coordinate logistics and can hold shipment until results are accepted.

Send the lab name, test list and acceptance criteria — we will prepare samples and documentation to make the test run smoothly.

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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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