| Vendor | Spec | Unit | Price | Currency | Date |
| Tongdai Haijing NATURAL SODA Co., Ltd. | China national standards | MT | 169.43 | USD | 20251125 |
| Tongdai Haijing NATURAL SODA Co., Ltd. | China national standards | MT | 169.38 | USD | 20251124 |
| Tongdai Haijing NATURAL SODA Co., Ltd. | China national standards | MT | 169.31 | USD | 20251121 |
| Tongdai Haijing NATURAL SODA Co., Ltd. | China national standards | MT | 169.24 | USD | 20251120 |
| Tongdai Haijing NATURAL SODA Co., Ltd. | China national standards | MT | 169.32 | USD | 20251119 |
| Tongdai Haijing NATURAL SODA Co., Ltd. | China national standards | MT | 169.36 | USD | 20251118 |
| Tongdai Haijing NATURAL SODA Co., Ltd. | China national standards | MT | 169.45 | USD | 20251117 |
| Tongdai Haijing NATURAL SODA Co., Ltd. | China national standards | MT | 169.45 | USD | 20251117 |
| Tongdai Haijing NATURAL SODA Co., Ltd. | China national standards | MT | 169.43 | USD | 20251114 |
| Tongdai Haijing NATURAL SODA Co., Ltd. | China national standards | MT | 169.34 | USD | 20251113 |