It is using advanced 5-wire resistive technology, anti-scratch hard coating. Surface polyester layer no longer responsible to determine the accuracy, with good durability and stability, and has more than 35 million times the service life of various forms of pollution of the adaptability of the strongest resistance to fluids, food and all kinds of impurities. Five-wire resistive super environmental adaptability, stability, durability. It is good for hotels, restaurants, industrial process control and medical equipment such as high frequency of usage.