| Vendor | Spec | Unit | Price | Currency | Date |
| Dongying Huatai Chemical Group Co., Ltd. | China national standards | MT | 1213.58 | USD | 20251106 |
| Dongying Huatai Chemical Group Co., Ltd. | China national standards | MT | 1212.96 | USD | 20251105 |
| Dongying Huatai Chemical Group Co., Ltd. | China national standards | MT | 1213.23 | USD | 20251104 |
| Dongying Huatai Chemical Group Co., Ltd. | China national standards | MT | 1213.54 | USD | 20251103 |
| Dongying Huatai Chemical Group Co., Ltd. | China national standards | MT | 1213.32 | USD | 20251101 |
| Dongying Huatai Chemical Group Co., Ltd. | China national standards | MT | 1213.32 | USD | 20251101 |
| Dongying Huatai Chemical Group Co., Ltd. | China national standards | MT | 1211.81 | USD | 20251016 |
| Dongying Huatai Chemical Group Co., Ltd. | China national standards | MT | 1209.53 | USD | 20251009 |
| Dongying Huatai Chemical Group Co., Ltd. | China national standards | MT | 1210.33 | USD | 20250930 |
| Dongying Huatai Chemical Group Co., Ltd. | China national standards | MT | 1208.68 | USD | 20250928 |