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Do you test heavy metals and residual solvents?

Yes. Every lot is heavy-metal screened (Pb, As, Hg, Cd per food-safety limits) and microbiologically checked (total plate count, coliforms, mould/yeast — a food concentrate) on the COA.

Because the process is aqueous extraction (no organic solvent), residual-solvent risk is essentially nil and GB 5009.262 is not the controlling test; we instead emphasize patulin (GB 2761 / GB 5009.185, mandatory for hawthorn class) and micro/heavy-metal safety. We do not release a lot exceeding heavy-metal, micro or patulin limits.

Buyers can request the specific panel and third-party verification.

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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. test