TR90 is a polymer material with memory function.

It is advanced and popular ultra-light frame material in the world. It has super high temperature resistance and can survive in environments above 350

degrees without deformation.

It has the characteristics of super toughness, impact resistance and wear resistance, and low friction coefficient, which can effectively prevent

damage to the eyes and face caused by frame breakage and friction during exercise.

Because of its unique molecular structure, it has good chemical resistance and is not easily deformed in high temperature environments. It can

withstand high temperatures of 350° in a short period of time and is not easy to melt and burn.

Acetate is made of high-precision material, which has a certain degree of elasticity.

When bent 90 degrees with a little force or relaxed after tightening, the shape memory board will return to its original shape. It has the characteristics

of good transparency, easy coloring, easy processing and polishing, good hand feeling, good processing performance, no aging, not easy to burn and

good light resistance.

Moreover, the acetate frame is processed by more than 100 processes such as internal turning, groove milling, external turning, turning and milling,

polishing, and surface treatment on a milling machine. The production process is complex and the cost is high.

This kind of glasses frame has fine workmanship, good layering, and durability. It is characterized by high strength, solidity, good gloss, uniform lens

groove size, and good adjustability.