Buy request for Gypsum Fiberboard and Insulations Bulgaria

We are looking for gypsum fiberboard. For our current project we need an alternative for this product -

We need two layers 10 mm thick each, which are attached to each other. Dimensions of the panels 1500 x 1000 mm, approximate 1500 sq.m. total.

Please tell me if you could provide such product. Thank you very much