1. Ask the supplier: directly ask whether the supplier is the original supplier. If suppliers can provide detailed information about their business and products, and can prove that they buy products directly from manufacturers or growers, then they are probably source suppliers.
2. Check the proof of purchase: ask the supplier to provide proof of purchase, such as invoices, receipts or other relevant documents, to prove that he directly purchased the products from the producers or growers. These documents should show the name of the supplier, the date of purchase, the quantity purchased and the details of the supplier.
3. Check the product source: check the label or logo on the product package to know the source of the product. If the label shows the details of the manufacturer or grower and matches the information provided by the supplier, then the supplier is probably the source supplier.
4. Visit the supplier's website or store: If the supplier has a website or physical store, you can visit it or visit it for more information. Suppliers usually provide detailed information about their products, including origin, planting methods, picking and processing processes.
5. Consult industry experts: If you are not sure whether the supplier is the original supplier, you can consult industry experts or peers, who may be able to provide more information and suggestions about the supplier.
Summary:
In short, judging whether a supplier is a supplier of goods requires careful investigation and verification of the source of its business and products. Ensure that the information provided by suppliers is consistent with the actual situation, so as to make wise purchasing decisions.