Rock Salt Supplier and Factory Audit Checklist

For high-volume or long-term sourcing, a supplier audit can reveal operational capability beyond price and samples. The audit scope should reflect the intended application and the buyer’s own quality system.

Material and product flow

Review the flow from raw-material receipt through packing, including segregation and foreign-material control points where relevant.

Granulation and process control

Ask how crushing, milling, screening or filling parameters are monitored and how process changes are controlled.

Storage and lot traceability

Identification of raw materials, packaging and finished goods, together with backward and forward traceability, supports risk management.

Laboratory and external testing

Clarify which tests are performed internally or externally and how equipment calibration and external-laboratory scope are managed where relevant.

Packaging and shipping

Fill-weight control, package integrity, lot coding, palletizing and loading procedures can directly affect commercial quality.

Audit topics

• Capacity and shifts
• Specification control
• Lot traceability
• Nonconformity management
• Laboratory/testing
• Packaging control
• Warehouse/shipping
• Change control

Related wholesale and export guides

• Supplier Selection
• COA & Documents
• Annual Supply