4-layer upholstery type:
| Group | Structure |
| Conducting cores | Tin coated copper wire |
| Electrical layer | XLPE |
| Casing | Pvc |
| Protective grid | Zinc Dip Steel Mesh |
| Outer shell | Pvc |
| Determine the color | 1 core: Red 2 cores: Red, white 3 cores: Red, yellow, blue 4 cores: Red, yellow, blue, black Multiple cores: Numbering on white wire |
| Shell color | Black or on request |
3-layer upholstery type:
| Group | Structure |
| Conducting cores | Tin coated copper wire |
| Electrical layer | XLPE |
| Casing | Pvc |
| Protective grid | Zinc Dip Steel Mesh |
| Determine the color | 1 core: Red 2 cores: Red, white 3 cores: Red, yellow, blue 4 cores: Red, yellow, blue, black Multiple cores: Numbering on white wire |
| Shell color | Black or on request |
