Is this longan-concrete organic or wildcrafted?
Top sources from contracted cultivated bases; wildcrafted grade is not standard. Organic certification (EU 2018/848, NOP / USDA, or equivalent) can be arranged for dedicated lots from certified-organic sources, subject to segregated handling and lead-time / premium.Conventional (non-organic) lots are the default. Top can issue a non-GMO declaration; the COA states whether a lot is organic-certified or conventional.For organic Longan Concrete, tell Top early so we reserve a certified run.
What is your order process and typical steps?
Typical flow:Inquiry with grade / volume / pack / destinationTop sends proforma invoice plus FOB quote plus specs (Q/XXXX)Buyer confirms and pays deposit (or opens L/C)Top produces / picks stock, runs QC plus assay plus sensory, issues COAShipment with full documentsAfter-sales (traceability, re-test, complaint channel).For new buyers we may start with a sample order. Lead times follow the agreed schedule.Top keeps one point of contact so the buyer always knows the order status.
Is there a national or ISO standard for longan-concrete?
There is no single-product GB or ISO standard for longan concrete. Top builds the spec on the enterprise standard Q/XXXX (built on GB 2762 food contaminants, GB 2760 flavour-use framework, GB 5009 series), with the relevant medicine-food dual-use management. Must-TestSoluble solids (Brix), moisture, Pb/As/Cd/Hg/Cu, total plate count, coliforms, mould & yeast. BackgroundLongan is a traditional Chinese fruit/tonic; its concrete has no dedicated ISO or single-product GB.. MethodsBrix by refractometry; contaminants by GB 5009 series; micro by GB 4789 series.Buyers may name Q/XXXX as acceptance basis.
What is your minimum order quantity (MOQ)?
MOQ1 kg (samples 5-10 g available).Because longan-concrete is a processed natural material, trial quantities are supported. Standard Commercial Packs1 kg (sealed pouch / drum), 5 kg and 25 kg food-grade drums.Recurring / contract volumes get priority allocation. If you need below 1 kg for lab evaluation, contact Top — we may supply a paid micro-sample.MOQ and pack options are confirmed on the quotation.
Can we set up a long-term supply agreement (LTA)?
Yes. For steady volume, Top recommends an LTA / annual framework that reserves processing slots and raw-material sourcing ahead, stabilizes price (with a review mechanism) and prioritizes your allocation.The LTA specifies grade (Q/XXXX or your spec), pack size, volume bands, lead time, quality agreement and complaint handling. Buyers under an LTA get buffer-stock priority and a dedicated contact.
What is the lead time from order to delivery?
Lead TimeBuffer-stock standard grade 3-7 days to dispatch; fresh batch 10-20 days (sourcing plus processing plus QC plus documentation).After dispatch, transit depends on incoterm (FOB Shanghai, sea to EU/US about 25-40 days; air 3-7 days). Top gives a firm dispatch date on the proforma and keeps the buyer updated.
What defines the composition of longan-concrete?
It is a sugar-rich fruit extract (glucose/fructose dominate) with fruity floral volatiles, not a volatile-oil class whose identity markers are sugars (glucose/fructose), with floral-fruity esters and terpene traces. Top fingerprints HPLC for sugars and GC for the fruity-floral volatile fingerprint as authenticity/quality markers.Top fingerprints the sugar/volatile profile and screens for added sugar or synthetic flavour adulteration. Each COA reports soluble solids (Brix), moisture, heavy metals and micro; the identity is the natural Dimocarpus longan Lour. (longan) profile, not a single volatile oil.
Which Incoterms do you support?
Top commonly trades on FOB (Shanghai / Qingdao), CIF / CFR, EXW, and DAP / DDP by agreement. FOB is default for most B2B buyers (you arrange main freight and insurance).For buyers wanting simplicity we can quote CIF/CFR (we arrange freight) or DAP/DDP (delivered to your door with duties handled). The chosen Incoterm is stated on the proforma and affects who books freight and where risk transfers.Tell Top your preference and we will align documentation.
What IFRA and allergen compliance should buyers observe?
longan-concrete is a fragrance/flavour material (IFRA class as applicable), so IFRA (which governs fragrance materials) is largely not the controlling framework; food use follows China food-safety frameworks (GB 2762/GB 2760) and, for export, FDA 21 CFR / EU food law, and cosmetic use (if any) follows the Cosmetic Safety Technical Specification and EU 1223/2009. Not a major allergen in CN/EU/US lists; Top supplies composition, the buyer's formulator handles labelling.Top supplies the material and supports the safety review; the buyer's formulator remains responsible for end-product compliance. For export, Top provides CLP-format SDS and the COA + assay + food-use statement so...