| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 973.48 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1065.18 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1065.18 | USD | 20251031 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1093.4 | USD | 20251031 |
| Derun Chemical Co., Ltd. | China national standards | MT | 931.15 | USD | 20251031 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 931.15 | USD | 20251031 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 931.15 | USD | 20251031 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 931.15 | USD | 20251031 |
| Shandong Dongming Petroche Mical Group Co., Ltd. | China national standards | MT | 931.15 | USD | 20251031 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 931.15 | USD | 20251031 |