Reviewing green tea extract COA and specification sheets? Check assay method, sample lot, physical fields, microbiology, packing and RFQ details first.
Requirements
This B2B sourcing guide helps purchasing, QA, product development and export teams prepare supplier questions before samples or quotation. Use the Green Tea Extract product page as the main commercial page, then confirm specification, document, sample, packing and destination details with the supplier.
Selection Criteria
| Review point | Buyer input | Why it matters |
|---|---|---|
| Specification target | Extract ratio, assay target, method, carrier status when relevant and powder format. | Specification target anchors supplier comparison. |
| COA fields | Batch number, assay, method, appearance, moisture, ash, microbiology and heavy metals. | COA fields connect sample lot and QA review. |
| Sample link | Sample label, batch number, COA version and internal sample notes. | Linked records reduce confusion before reorder or scale-up. |
| Application fit | Supplement, beverage, food or functional ingredient project format. | Application helps decide which fields matter most. |
| RFQ details | Quantity, MOQ expectation, packing size and destination market. | These inputs help the supplier quote the right grade. |
Practical Recommendation
Start with the intended application, target specification and document checklist. If the grade is fixed, send sample quantity, COA fields, packing request, MOQ expectation and destination market. If the grade is still open, ask for available specification options with representative COA and sample lot details.
Sample Review vs Bulk RFQ
| Dimension | Sample review | Bulk RFQ |
|---|---|---|
| Main purpose | Check powder behavior, specification fit and document readiness. | Confirm supply plan, MOQ, packing, lead time and export details. |
| Buyer input | Application, sample quantity, test matrix and COA needs. | Quantity, packing size, destination market and reorder expectation. |
| Limit | Needs later commercial confirmation. | Should follow sample and document approval when requirements are strict. |
Related Product Pages
- Green Tea Extract Supplier – Main page for COA, samples and quotation.
- L-Theanine Green Tea Extract Supplier – Adjacent HPLC documentation path.
- EGCG 98 Powder Supplier – Adjacent assay specification path.
RFQ Checklist
- Target assay, method and extract ratio.
- Representative COA and sample lot number.
- Physical, microbiology and heavy metals fields.
- Application and internal approval record.
- MOQ, packing and destination market.
Related Sourcing Pages
- Instant Tea Powder Supplier hub for category-level comparison.
- Green Tea Extract product page for product-level specification and quotation.
- Contact HERBSEA with application, sample, COA and RFQ details.
FAQ
Check whether assay, method, appearance, physical fields, microbiology, heavy metals and packing details match the agreed specification fields.
A clear sample lot and COA connection helps QA and procurement keep approval records consistent before bulk quotation.
Use the Green Tea Extract product page and include application, target assay, method, document needs and destination market.
Summary
Before comparing suppliers, align application, target specification, COA fields, sample plan, MOQ, packing, export documents and destination market. Clear inputs help suppliers respond with usable samples and quotation details.
Download or request the Tea Ingredient RFQ Checklist from HERBSEA.