What is a sunglass plastic frame made out of?

[Tri Lakes]

And can you please tell me what the primary,secondary and tertiary industries for the plastic frame of the sunglasses. Thanks.

[Triadelphia]

This question does need specialized knowledge . I only know that the most commonly used plastic in eyeglass frames, is cellulose acetate which is relatively inexpensive, easy to work with, and comes in a wide variety of colors, textures, and patterns. The material is easily adjusted but tends to get brittle with age.

[Triana]

sunglasshut is good . Lenscrafters is also recommended to you for it is the world largest eyeglasses retailer . Online stores like target ,nordstrom are good too .