How it's work: PROT + ELEC = HYGN; HYGN + DESL + (PTNM) = OIL + WATR + (PTNM); OIL + NEUT = GAS + NEUT; GAS + CAUS + AIR3~6.5 = RFGL; RFGL + AIR0-1.9 = RFRG;