Impreg is likely misspelled.
Impreg has no English definition.
As a noun compreg is
a compressed and impregnated wood; a wood-based composite made in various forms from panel to solid profiles.
impreg
Not English
Impreg has no English definition. It may be misspelled.
compreg
English
Noun
(
en noun)
A compressed and impregnated wood; a wood-based composite made in various forms from panel to solid profiles.