Note: 1. This series of graphite-modified polypropylene heat exchangers are new types of corrosion-resistant heat exchange equipment, capable of handling corrosive media such as acids, alkalis, and salts in both the tube and shell sides. 2. Equipment materials: For general corrosive media, standard reinforced polypropylene or pure polypropylene equipment is more cost-effective. However, in environments with higher temperatures or stronger acidic conditions, the service life of such equipment may be less ideal. In such cases, fiberglass-reinforced polypropylene (FRPP) equipment is recommended for extended durability.