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Are heavy metals and pesticide residues tested on every batch?

Yes — heavy metal screening and pesticide residue checks are part of the routine batch quality control, in addition to pH, specific gravity, microbial limits and sensory evaluation.

Test GroupScope
Heavy metalsLead, arsenic, cadmium, mercury and other regulated elements
Pesticide residuesScreening against common agricultural residues
MicrobiologyMicrobial limit test per batch
SensoryAroma, appearance, color evaluation
Contract farming and controlled picking practices reduce the residue baseline at the source, and the results are documented in the batch COA. For your destination market, we can arrange expanded third-party testing (e.g., EU/US pharmacopeia limits, specific MRL lists) against your specification.

Send your required limits or destination standard and we will confirm coverage on the next batch.

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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.