Sweet potato

Buyers should prioritize skin integrity and flesh density. Ensure the potatoes are firm to the touch, free from soft spots, mold, or deep bruises. For export, a uniform shape and size (typically graded as S, M, L, or 2L) is essential for retail packaging. The moisture content should be stabilized through a curing process (holding at specific temperatures post-harvest) to enhance sweetness and extend shelf life during transit.

Compliance is critical in the food industry. Suppliers must provide GLOBALG.A.P. certification for agricultural practices and HACCP or ISO 22000 for processing facilities. For specific markets, Phytosanitary Certificates issued by the exporting country's national plant protection organization are mandatory to prove the shipment is free from regulated pests. If sourcing organic, verify USDA Organic or EU Organic certifications.

The choice depends on the end-use: Beauregard or Jewel varieties (orange flesh) are preferred for processing into fries or purées due to high beta-carotene and moisture. Purple sweet potatoes are sought after for natural food coloring and health supplements due to high anthocyanin content. For the snack industry (dried chips), varieties with higher starch content and lower moisture are ideal to ensure crispness and reduced oil absorption.

For frozen products (IQF), ensure the supplier uses Individual Quick Freezing technology to maintain cellular structure. For dried or vacuum-fried snacks, check the residual oil content (should be <5%) and moisture levels (<3%). All processed items must have traceability codes printed on the packaging, linking the batch back to the specific farm and harvest date.

The biggest risk is perishability and spoilage during long-lead maritime shipping. To mitigate this, use Reefer Containers (Refrigerated) with active Atmospheric Control (CA) to manage oxygen and CO2 levels, which slows ripening. Additionally, utilize Trade Assurance services on Made-in-China.com to ensure payment is only released upon verification of shipping documents and quality inspections.

Sweet potato prices vary by harvest cycles. It is recommended to sign Annual Framework Agreements to lock in a volume-based price, or use a sliding scale price model indexed to market rates. Request FOB (Free On Board) terms to maintain control over the shipping timeline, as delays in perishables can lead to total cargo loss.

Sweet potatoes require a stable temperature of 12°C to 15°C (55°F to 60°F). Temperatures below 10°C cause chilling injury, while temperatures above 16°C lead to sprouting and decay. Ensure the shipping container has proper ventilation settings (usually 15-25 CBM/hr) to prevent carbon dioxide buildup, which causes internal browning.

Always conduct a factory audit or third-party inspection (such as SGS or Bureau Veritas) before the final balance payment. Verify the supplier's Export License specifically for agricultural products. Using the Audit Reports available on Made-in-China.com helps identify 'Audited Suppliers' who have undergone rigorous on-site verification of their production capabilities and business legitimacy.