| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 807.62 | USD | 20251115 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 807.62 | USD | 20251114 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 807.62 | USD | 20251114 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 807.17 | USD | 20251113 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 807.17 | USD | 20251113 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 807.53 | USD | 20251112 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 807.53 | USD | 20251112 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 807.16 | USD | 20251111 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 807.16 | USD | 20251111 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 776.22 | USD | 20251110 |