| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 719.58 | USD | 20251121 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 719.61 | USD | 20251119 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 719.77 | USD | 20251118 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 720.18 | USD | 20251117 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 720.08 | USD | 20251116 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 720.08 | USD | 20251115 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 720.08 | USD | 20251114 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 720.0 | USD | 20251112 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 719.67 | USD | 20251111 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 729.65 | USD | 20251110 |