The lower density of the TR90 material makes the frame lightweight, reducing the burden on the wearer's nose and ears.
It can withstand high temperature of 350 degrees for a short period of time, not easy to melt and burn, suitable for use in a variety of environments.
TR90 eyeglass frames have a lubricated surface and a low coefficient of friction, which reduces friction damage to the wearer's head.
TR90 frames can be perfectly combined with other metals in bright colors, providing more choices for fashionable people.