by Yefferson Stiven Alvarez Cruz 7 years ago
293
More like this
by Sebastian Jimenez
by Luis Fernando Reyes
by santiago huertas
by Olaya García Ruiz
Poliestirenos (PS)
Poliamidas (PA) , Poliestres (UP)
Polipropileno (PP)
Espumas de poliuretano (PUR)
Poliestileno (PE) , Policloruro de vinilo (PVC)