| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 254.11 | USD | 20251108 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 254.11 | USD | 20251107 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 254.0 | USD | 20251106 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 253.88 | USD | 20251105 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 253.93 | USD | 20251104 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 244.12 | USD | 20251103 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 235.61 | USD | 20251102 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 235.61 | USD | 20251101 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 235.61 | USD | 20251031 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 235.66 | USD | 20251030 |