| Sumo Didactic - Technical qualities |
| After exposure for a total of 309 hours, roughly equivalent to about 2.5 years, the results are excellent according to tests carried out in a certified laboratory. |
| Sumo Didactic - Technical qualities |
| After exposure for a total of 309 hours, roughly equivalent to about 2.5 years, the results are excellent according to tests carried out in a certified laboratory. |