| Vendor | Spec | Unit | Price | Currency | Date |
| Shanghai Guoke | Food Grade | MT | 337.8 | USD | 20251010 |
| Shanghai Guoke | Food Grade | MT | 337.54 | USD | 20251009 |
| Shanghai Guoke | Industrial Grade | MT | 306.6 | USD | 20251009 |
| Shanghai Guoke | Industrial Grade | MT | 306.8 | USD | 20250930 |
| Shanghai Guoke | Food Grade | MT | 323.69 | USD | 20250930 |
| Shanghai Guoke | Food Grade | MT | 323.54 | USD | 20250929 |
| Shanghai Guoke | Industrial Grade | MT | 306.66 | USD | 20250929 |
| Shanghai Guoke | Industrial Grade | MT | 306.39 | USD | 20250928 |
| Shanghai Guoke | Food Grade | MT | 323.25 | USD | 20250928 |
| Shanghai Guoke | Food Grade | MT | 323.25 | USD | 20250926 |