| Vendor | Spec | Unit | Price | Currency | Date |
| Shanghai Guoke | Food Grade | MT | 331.14 | USD | 20251016 |
| Shanghai Guoke | Food Grade | MT | 331.01 | USD | 20251015 |
| Shanghai Guoke | Industrial Grade | MT | 307.06 | USD | 20251015 |
| Shanghai Guoke | Industrial Grade | MT | 306.95 | USD | 20251014 |
| Shanghai Guoke | Food Grade | MT | 330.89 | USD | 20251014 |
| Shanghai Guoke | Food Grade | MT | 330.95 | USD | 20251013 |
| Shanghai Guoke | Industrial Grade | MT | 307.01 | USD | 20251013 |
| Shanghai Guoke | China national standards | MT | 306.83 | USD | 20251011 |
| Shanghai Guoke | China national standards | MT | 337.8 | USD | 20251011 |
| Shanghai Guoke | Food Grade | MT | 337.8 | USD | 20251010 |