2. Metal and plastics materials: their working and resistance to chemicals.
D000497:Alloys; D000535:Aluminum; D055598:Chemical Phenomena; D002621:Chemistry; D003300:Copper; D004582:Electronics, Medical; D004864:Equipment and Supplies; D008670:Metals; D010969:Plastics; D011108:Polymers; D011137:Polystyrenes; D012997:Solvents
D000497:Alloys; D008670:Metals; D010969:Plastics; D011108:Polymers; D011137:Polystyrenes; D012997:Solvents; D003300:Copper; D000535:Aluminum