4,400 sulfur on paper, all of it as explosives, yet no bench can craft one. Read the bill as a price tag; the recycler is what a salvaged module is worth.
That sulfur figure is a price tag, not a plan. The module can't be crafted or researched at all, whatever bench you stand at, and the export lists no use for it either. Every module in a wipe is salvage from satellite wreckage, as its item page explains, and the calculator only says what the explosives inside it would cost you.
Read it instead as explosives in storage. The ordinary recycler hands back 20 explosives, exactly what one C4 takes, and the red one gives more. So a thruster module is close to a free charge, as long as someone in the group holds the C4 blueprint and the tech trash for it. If nobody does, the same explosives go into rockets.
Don't hoard them either. No recipe in the export uses the module, so in a box it only takes up a slot.