1. S.C. Romturingia SRL, 30 Calea Brasovului Campulung‐Muscel Arges Romania
2. University POLITEHNICA of Bucharest Composite Products Laboratory, 313 Splaiul Independentei, sector 6 Bucharest Romania
3. S.C. Tensor SRL 48 Matei Basarab, sector 3 Bucharest Romania
4. University POLITEHNICA of Bucharest Manufacturing Engineering Department 313 Splaiul Independentei, sector 6 Bucharest Romania