Start with specification, not catalog category
A practical RFQ should define botanical source, active marker, assay method, extraction route, MOQ tier and required documents before price comparison.
Compare MOQ and lead time by production route
Stock extracts can support faster samples, while customized assay or solvent requirements usually require fresh production and longer lead time.
Document readiness decides supplier quality
COA, HPLC chromatogram, TDS, MSDS, heavy metal scope and residual solvent information should be checked before bulk quotation.