Classification
Product TypeRaw Material
Product FormShelled (raw kernel)
Industry PositionPrimary Agricultural Product (post-harvest processed)
Raw Material
Market
Raw shelled walnuts (walnut kernels) are supplied in China through a large domestic orchard base and a widespread network of cracking/shelling and sorting facilities. The market functions as both a major producing/processing origin for export-grade kernels and a large domestic consumption market for bakery, confectionery, and snack manufacturing. Supply is seasonal at harvest, but commercial availability is typically year-round through dried-kernel storage and continuous processing. Trade access for China-origin kernels is shaped by buyer requirements on food safety (e.g., mycotoxins, pesticide residues) and by supply-chain due diligence expectations related to Xinjiang-origin risk screening in some markets.
Market RoleMajor producer, processor and exporter; large domestic consumer market
Domestic RoleSignificant domestic use in household consumption and food manufacturing (bakery, confectionery, snack processing)
SeasonalityHarvest is concentrated in early autumn, while dried kernels are stored and processed to supply the market year-round.
Specification
Physical Attributes- Kernel color grading (e.g., light/amber) used in buyer specifications
- Defect limits for shrivel, insect damage, mold, and rancidity
- Moisture control to protect texture and shelf stability
Compositional Metrics- Moisture specification commonly used to manage shelf stability and mold risk
Grades- Buyer grades commonly differentiate by kernel color and by form (halves vs. pieces) with defect tolerances
Packaging- Food-grade inner liner bags within cartons for bulk trade
- Barrier packaging (e.g., vacuum or inert-gas packed liners) used to reduce oxidation risk on longer routes
Supply Chain
Value Chain- Orchard harvest → hulling/de-husking → drying → cracking/shelling → sorting (size/color/defects) → foreign-matter removal/metal detection → packaging → storage → domestic distribution or export dispatch
Temperature- Cool, dry storage and transport to limit oxidation/rancidity and moisture pickup (avoid heat and high humidity)
Atmosphere Control- Oxygen exposure management (barrier packaging and reduced headspace) supports flavor stability for longer transit/storage
Shelf Life- Shelf stability depends heavily on moisture control and limiting oxidation; quality can deteriorate with heat, humidity, and prolonged oxygen exposure
Freight IntensityMedium
Transport ModeSea
Risks
Regulatory Compliance HighShipments can be detained or blocked in some markets if the supply chain cannot credibly demonstrate no forced-labor linkages for goods potentially connected to Xinjiang-origin sourcing (e.g., insufficient origin/traceability evidence for China-origin walnut kernels).Implement province/orchard-level traceability, maintain auditable chain-of-custody records, conduct supplier due diligence, and prepare market-specific forced-labor compliance documentation where applicable (e.g., for U.S. importers under UFLPA).
Food Safety HighNon-compliance with destination limits for mycotoxins (including aflatoxins), pesticide residues, or foreign matter can trigger border rejection, recalls, or delisting for walnut kernels.Use risk-based sampling and accredited lab testing per lot; control moisture and storage conditions; enforce supplier preventive controls and documented HACCP/FSMS programs.
Logistics MediumLong-haul shipping with temperature/humidity excursions can accelerate rancidity or mold risk, while freight disruptions can delay arrivals and compress remaining shelf life for buyers.Specify moisture limits and packaging barriers, avoid high-heat storage at origin/ports, use appropriate container practices, and build schedule buffers for peak-shipping periods.
Sustainability- Water stewardship concerns in arid production zones (region-dependent)
- Agrochemical use and residue compliance expectations for export markets
- Soil and orchard management practices affecting long-term productivity
Labor & Social- Supply-chain due diligence risk related to allegations of forced labor and state-imposed labor in Xinjiang; buyers may require origin exclusion or enhanced traceability where Xinjiang sourcing is possible.
- Migrant and seasonal labor reliance in agricultural and processing operations (working conditions and recruitment transparency expectations).
Standards- FSSC 22000
- BRCGS Food Safety
- ISO 22000
- HACCP
FAQ
What is the single biggest trade-stopping risk to watch when sourcing shelled walnuts from China?For some destination markets, the most trade-stopping risk is forced-labor compliance screening tied to potential Xinjiang-origin linkages. If the supply chain cannot provide credible traceability and due diligence evidence, shipments can be detained or refused.
Which regions are most associated with walnut production in China for kernel supply programs?Major walnut-producing areas commonly cited for China include Xinjiang, Yunnan, and parts of north-central China such as Shaanxi, Shanxi, and Hebei. Buyers often ask for province-level origin disclosure as part of procurement and compliance.
What documents and quality evidence do buyers commonly request for China-origin walnut kernels?Beyond standard shipping documents (invoice, packing list, bill of lading, and sometimes certificate of origin), buyers commonly request a certificate of analysis or lab test report for contaminants and residues, plus lot-level traceability records linking kernels to processor lots and origin regions.