In this video, a representative at an ecology trade show presents some innovative building materials that are eco-friendly and will allow you to save some money on your energy bills. These materials are made out of gypsum cellulose and are used for insulation.
Se desideri guardare questo e altri video, ottieni la nostra prova gratuita.
inglese
tedesco
francese
spagnolo
English
Español
Français
Deutsch
Italiano 
