| Vendor | Spec | Unit | Price | Currency | Date |
| Shanghai Guoke | Industrial Grade | MT | 309.04 | USD | 20251106 |
| Shanghai Guoke | China national standards | MT | 331.45 | USD | 20251105 |
| Shanghai Guoke | China national standards | MT | 308.88 | USD | 20251105 |
| Shanghai Guoke | Industrial Grade | MT | 308.95 | USD | 20251104 |
| Shanghai Guoke | Food Grade | MT | 331.52 | USD | 20251104 |
| Shanghai Guoke | Food Grade | MT | 331.61 | USD | 20251103 |
| Shanghai Guoke | Industrial Grade | MT | 309.03 | USD | 20251103 |
| Shanghai Guoke | Industrial Grade | MT | 308.97 | USD | 20251031 |
| Shanghai Guoke | Food Grade | MT | 331.55 | USD | 20251031 |
| Shanghai Guoke | Food Grade | MT | 331.62 | USD | 20251030 |