| | | | | | | | | 20% ~ 40% | 2.8 ~ 3.51 | | ᠠᠪᠤᠳᠠᠭ | | | | | | | | | | | | | | | | | | | | | | | | | | | 1. | | | | 2 | 2 . | | | | | | | | | | | 3. | PVC | | 1P1.5P 2P IP ≈ 735 | | | | 4. | | | | | | | | | 5. | | | | | | |