Adds technologies to increase the productivity of some recipes
Mods introducing new content into the game.
Furnaces, assembling machines, production chains.
in 2.0 space age, vanilla techs now exist to add productivity for steel, plastic, LDS, rocket fuel, processing units, so there are now (5) redundant infinite techs with space age + CE.
(my suggestion would be to make it a config setting "disable productivity techs if similar tech already exists in vanilla (space age DLC)"