| Bang-gia-Ong-HDPE-ISO-4427-(22-02-2021) | 03/12/2021 |  |
| PK-Duc-HDPE-PN10-PE100-ISO-4427-(22-02-2021) | 03/12/2021 | |
| PK-Duc-HDPE-PN16-PE100-ISO-4427-(22-02-2021) | 03/12/2021 | |
| PK-Gia-cong-HDPE-ISO-4427-(22-02-2021) | 03/12/2021 | |
| PK-HPDE-PE100-(duc)-02-01-2019 | 03/12/2021 | |
| Bang-gia-Ong-PPR-DIN-8078-(22-02-2021) | 03/12/2021 | |
| PK-PPR-DIN-8078-(22-02-2021) | 03/12/2021 | |
| Bang-gia-uPVC-9-11-21 | 03/12/2021 | |
