PBT, or polybutylene terephthalate, is a high-performance thermoplastic polyester. It crystallizes rapidly, is easy to mold and process, and has low processing costs. PBT possesses excellent mechanical properties, including high strength, good rigidity, and good fatigue resistance, and can operate stably even under complex stress environments. It exhibits outstanding heat resistance with a high heat distortion temperature, allowing for long-term use in high-temperature environments. It also demonstrates good chemical stability, tolerating most acids, alkalis, and organic solvents. Its excellent electrical insulation properties give it a significant advantage in the electronics and electrical appliance industries. Furthermore, it possesses low water absorption and good dimensional stability. Due to these advantages, PBT is widely used in electronics, automotive manufacturing, and the machinery industry.

