EVE Blueprints, manufacturing and research
The majority of in-game items are created by players through the use of blueprints. Original blueprints (BPOs) may be used an unlimited number of times, researched to improve manufacture time or cost, and copied. Blueprint copies (BPCs) have a limited number of runs and cannot be researched. "Tech I" blueprints can be purchased from NPCs. More advanced items (Tech II) can be invented from their Tech I counterpart BPCs. This results in a Tech II BPC that can be manufactured. Manufacturing and inventing from blueprints requires items including minerals mined and refined from asteroids and moons, construction components (themselves created from other blueprints), and items either dropped by or salvaged from NPCs.[39][40]
