Material: A new complex material ((Hongtai code: HT-R)
It's middle between same as CR-39&rubber Optical material
Benefit:
● Same as CR-39 sunlens
● High resistance to chemical, ideal for Acetate frame.
● Low stress, cracking & crazing resistance.
● Optically superior, Transparent and clear
● Easily worked & reliable
● 100% UV protection
● High thermal stability, can be made a variety of shape(Toric, Decentred etc.)
● Can be compatible with all hongtai's optical coatings.
● Limited scratch resistance, same as CR-39
Features & Benefit