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How do you handle inspection and quality control?

QC is applied at raw material intake, during distillation, and before every shipment — with third-party inspection welcome.

QC StageCheck Items
Raw materialFlower grade, freshness, pesticide residue screening
In-processDistillation parameters, temperature, yield
Finished batchAppearance, pH, SG, aroma, GC-MS fingerprint
MicrobiologyTPC, yeast & mold, pathogens per batch
Pre-shipmentPackaging, labeling, seals, lot traceability
We support third-party inspections (SGS, Bureau Veritas, Intertek) before shipment — you may specify the inspection standard and lab. Inspection reports and photos are provided on request.

Tell us if your contract requires a specific inspection company — we will arrange it with the order.

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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.