... electric, septa, cushion, gasket. High frequency plank coated with copper;4. heat resisting envelope, terrace base-material, enswathing of ... dust such as resin, coating material, etc.3). Chemical corrosion resistant, it could resist acid, alkali, aqua fortis and various ... kinds of organic liquid corrosion;4). Capability of medicament resistant and non-poison, almost to resisting all ...