| Vendor | Spec | Unit | Price | Currency | Date |
| Shanghai Guoke | Food Grade | MT | 331.43 | USD | 20251120 |
| Shanghai Guoke | Industrial Grade | MT | 308.86 | USD | 20251120 |
| Shanghai Guoke | China national standards | MT | 331.58 | USD | 20251119 |
| Shanghai Guoke | China national standards | MT | 309.01 | USD | 20251119 |
| Shanghai Guoke | Industrial Grade | MT | 309.08 | USD | 20251118 |
| Shanghai Guoke | Food Grade | MT | 331.66 | USD | 20251118 |
| Shanghai Guoke | Food Grade | MT | 331.85 | USD | 20251117 |
| Shanghai Guoke | Industrial Grade | MT | 309.25 | USD | 20251117 |
| Shanghai Guoke | Industrial Grade | MT | 309.21 | USD | 20251114 |
| Shanghai Guoke | Food Grade | MT | 331.8 | USD | 20251114 |