| 1 | Botanical extract manufacturer | Root-derived Pueraria extract powder with a stated puerarin assay; ask whether the product is a standardized extract or a purified ingredient. | Batch-specific certificate of analysis (COA); assay method and result; botanical identity; residual solvents; heavy metals; microbiological results. | Bulk quotations, specification sheets, samples, and export documentation, subject to confirmation. | Confirm the botanical source, plant part, extraction process, and whether the quoted assay is measured on an as-is or dry basis. |
| 2 | Pueraria root-processing specialist | Powder made from Pueraria root extract, potentially offered at different extract strengths or standardization levels. | Species and plant-part identification; chromatographic assay; moisture or loss-on-drying result; contaminant testing. | Source traceability information, sample supply, and discussion of harvest or processing details. | “Pueraria extract” does not by itself establish a specific puerarin content; obtain the exact specification for each grade. |
| 3 | Purified-ingredient producer | Higher-assay puerarin powder, if offered; request the assay range, impurity profile, and intended grade. | Validated assay method, chromatographic purity or impurity data, identification tests, and batch-to-batch results. | Technical documentation and discussions about analytical methods and intended applications. | Higher assay does not automatically establish suitability for food, supplement, cosmetic, or pharmaceutical use; verify the applicable regulatory requirements. |
| 4 | Contract or custom-extraction manufacturer | Custom extract powder with buyer-defined assay, carrier, or powder characteristics, subject to feasibility. | Agreed finished-product specification; process and change-control information; batch COA; contaminant and stability data as relevant. | Specification development, pilot samples, and contract manufacturing inquiries. | Clarify development fees, minimum order quantities, lead times, ownership of specifications, and approval of process changes. |
| 5 | Standardized botanical-ingredient supplier | Standardized Pueraria extract powder offered against a stated marker-compound specification. | Marker assay, identity, moisture, microbiological limits, and contaminant results against the agreed specification. | Product documentation, sample evaluation, and repeat-order support where available. | Ask whether standardization is achieved through extraction, blending, or another process, and how batch consistency is controlled. |
| 6 | Export-focused ingredient supplier | Export-packed puerarin or Pueraria extract powder; confirm the exact product name and grade on the offer and documents. | COA, specification, safety data sheet where applicable, country-of-origin information, and export document examples. | Shipping coordination, export paperwork, and packaging options, depending on destination and order. | Check import rules, labeling requirements, customs classification, and whether the supplier can provide documents required in the destination market. |
| 7 | Small-batch or sample-oriented supplier | Evaluation quantities of a stated powder grade, subject to current sample availability. | Sample COA and confirmation that the sample specification matches the commercial batch specification. | Smaller trial quantities, technical questions, and preliminary quotations where offered. | Confirm sample charges, shipping costs, sample-to-production consistency, and commercial minimum order quantity before testing. |
| 8 | Distributor or trading supplier | Resold puerarin or Pueraria extract powder sourced from an upstream producer. | Original or traceable batch COA, manufacturer identity disclosed under suitable confidentiality terms, and lot-level traceability. | Consolidated purchasing, local communication, or logistics coordination, depending on the distributor. | Establish who manufactures the material, who is responsible for quality complaints, and whether the source may change between orders. |
| 9 | Formulation-oriented ingredient supplier | Powder grade selected for a defined formulation or processing need; carriers or other ingredients must be disclosed. | Full composition, assay, excipient or carrier details, allergen and contaminant information where relevant. | Formulation discussions, handling guidance, or application support if offered. | Check whether the product is pure puerarin or a formulated extract blend; confirm all components meet the intended use and labeling rules. |
| 10 | Quality-system-focused ingredient supplier | Specified puerarin powder supported by documented quality and batch-release procedures. | Current quality-system certificates where applicable, audit information, batch records or summaries, deviation handling, and change control. | Quality questionnaires, document review, and audit coordination where available. | Verify certificate scope, issuing body, site, and validity directly; a certificate alone does not prove that a particular batch meets its specification. |