| Vendor | Spec | Unit | Price | Currency | Date |
| Shanghai Guoke | Food Grade | MT | 346.15 | USD | 20251127 |
| Shanghai Guoke | Industrial Grade | MT | 324.96 | USD | 20251127 |
| Shanghai Guoke | Food Grade | MT | 346.06 | USD | 20251126 |
| Shanghai Guoke | Industrial Grade | MT | 324.88 | USD | 20251126 |
| Shanghai Guoke | Food Grade | MT | 345.92 | USD | 20251125 |
| Shanghai Guoke | Industrial Grade | MT | 324.74 | USD | 20251125 |
| Shanghai Guoke | Food Grade | MT | 345.82 | USD | 20251124 |
| Shanghai Guoke | Industrial Grade | MT | 324.64 | USD | 20251124 |
| Shanghai Guoke | Food Grade | MT | 331.57 | USD | 20251121 |
| Shanghai Guoke | Industrial Grade | MT | 308.99 | USD | 20251121 |