yellow-chrysanthemum-concrete is a low-hazard material and is not classified as dangerous goods in standard carriage regimes — low DG friction. That said, Top still issues an SDS (CLP for EU) and packs it sealed and correctly labelled; if a carrier treats it as a DG under a stricter interpretation, we declare and pack to the SDS-driven class and use qualified forwarders. We never misdeclare; the lot-specific SDS drives the transport class. Buyers should inform their broker of the material and SDS so clearance and last-mile handling are correct.

Yes. Top supports customization and OEM / private-label: (1) grade — standard vs a defined target grade; (2) supply at a defined concentration for easier handling; (3) private-label with your artwork and documents; (4) develop a dedicated lot to Q/XXXX or your spec. MOQ and lead time depend on customization; tell us the target grade, pack size and volume and we will quote. All customized lots still ship with COA plus assay plus MSDS.

Country of origin: Guangxi wild-cultivated areas, China. Top keeps a raw-material (lot) -> processing -> concentration/purification -> packaging ledger and can issue a lot-specific traceability dossier. For audit, Top provides the supply-chain statement, batch COA and assay. Traceability traces the the raw-material orchard / lot through processing to the finished product.

Primary applications: flavour, fragrance and functional-food / health-product formulations. It is used as a flavour / fragrance material, dosed per formulation. Formulators label it as the product (species) extract and note it is distinct from a generic essential oil (species-specific extract). Cosmetic use follows the Cosmetic Safety Technical Specification and EU 1223/2009; safety assessment applies.

Yes. For B2B orders Top can sign a sales contract and, for ongoing supply, a quality agreement / LTA specifying grade, pack sizes, price mechanism, lead time, traceability and complaint handling. For yellow-chrysanthemum-concrete, Q/XXXX conformance is the working acceptance basis unless the contract states otherwise (the COA and assay accompanying each lot are the evidence). We encourage buyers to attach their specification so both sides measure against the same numbers. Contracts are in EN/CN as needed.

Top treats complaints seriously: (1) notify us within the validity window with the lot number, COA reference and the issue; (2) we review the retained sample and the batch COA / assay result; (3) if a genuine non-conformance is confirmed, we offer replacement, credit or refund per the contract; (4) for disputes we can involve a third-party lab (SGS, Eurofins) with costs allocated by outcome. Keep the original pack sealed where possible. Our aim is a fair, documented resolution — we do not argue against our own lot data.