For the development of a highly performing prototype of the GGDOORS, the Bello Srl, the project leader of the DTTDOORS project, in order to develop a prototype for a highly sustainable ecological door complying with the stringent international standards of the ILO & gas sector, it intends to study and test new constructive solutions that would enable the use of recycled and environmentally-friendly materials, paints and non-toxic additives at the same time as well as all gas leakage tests, the existence of burst, fire resistance and marine corrosion.