생산 방식/제강소·생산 방식이번 버전 변경제강소steel_mill_maintenancein_game/common/building_types/pure_one_level_productions.txt:163정의in_game/common/building_types/pure_one_level_productions.txt:163164iron = 2.963165coal = 2.963166produced = steel167output = 4169debug_max_profit = mills_profit_margin (0.35)170category = mills_input