The product is made of rubber. Being vulcanized. It serves as goof electrical insulation. It is flexible and anti-slip. It can be mainly used as ground insulation and very suitable for power, telecommunication and other industries.
| Thickness (mm) | Applied voltage (kv) | Test voltage | Mini breakdown voltage (kv) | 
| 4 | 10 | 10 | 15 | 
| 6 | 20 | 20 | 30 | 
| 8 | 25 | 25 | 35 | 
| 10 | 30 | 30 | 40 | 
| 12 | 35 | 35 | 45 |