| Vendor | Spec | Unit | Price | Currency | Date |
| 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 |
| Dongying Huatai Chemical Group Co., Ltd. | China national standards | MT | 1208.68 | USD | 20250926 |
| Dongying Huatai Chemical Group Co., Ltd. | China national standards | MT | 1210.3 | USD | 20250925 |
| Dongying Huatai Chemical Group Co., Ltd. | China national standards | MT | 1210.3 | USD | 20250924 |
| Dongying Huatai Chemical Group Co., Ltd. | China national standards | MT | 1210.3 | USD | 20250923 |
| Dongying Huatai Chemical Group Co., Ltd. | China national standards | MT | 1209.46 | USD | 20250922 |
| Dongying Huatai Chemical Group Co., Ltd. | China national standards | MT | 1209.09 | USD | 20250920 |