1.    Our company manufactures TAIRILITE® PC resin. Due to changes in the UL CTI (Comparative Tracking Index) test method, which have affected CTI ratings, UL requires a revision of the product grade names to distinguish them from the original grades.

2.    The material composition remains exactly the same before and after the grade change, with equivalent physical properties.

3.    The correspondence table of the original and new grade names is as follows：

Please see the attached file.