| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1244.14 | USD | 20251020 |
| Shandong Mingyu Supply Chain Management Co., Ltd. | China national standards | MT | 1127.19 | USD | 20251020 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1127.19 | USD | 20251020 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1268.09 | USD | 20251020 |
| Shandong Aite Chemical Co., Ltd. | China national standards | MT | 1155.37 | USD | 20251020 |
| Shandong Mingyu Supply Chain Management Co., Ltd. | China national standards | MT | 1127.57 | USD | 20251018 |
| Shandong Aite Chemical Co., Ltd. | China national standards | MT | 1155.76 | USD | 20251018 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1244.56 | USD | 20251017 |
| Shandong Aite Chemical Co., Ltd. | China national standards | MT | 1155.76 | USD | 20251017 |
| Jinan Pulaihua Chemical Co., Ltd. | China national standards | MT | 1198.04 | USD | 20251017 |