| | | | | | | | | | | | | | | | | | | | | | | | | | | PVC | | PVC | | PE | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | PVC | | | | | PVC | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | PVC | | | | | | | 2024 4 17 | |