What material is the most durable eyeglass frame

 Tr-90 is also known as plastic titanium, it is not titanium alloy, but Switzerland EMS-Grivory (Ames Chemical) company invented a polymer nylon material, its density is only 1.14 to 1.15 grams/cubic centimeter, only a quarter of pure titanium, stainless steel 1/8, can float in a high concentration of salt water, wear resistance to impact resistance to high temperature, It is also very good in toughness and automatically recovers after large bending. It is non-toxic. It is a food-grade material in Europe, and it is the most widely used Rimless Frames material at present. But the TR-90 Rimless Glasses Frames is less strong than titanium, so it will be thicker than the alloy, resulting in an overall mass similar to titanium. Pure titanium refers to the titanium metal material with a purity of more than 89%, high melting point, light material, strong corrosion resistance and strong electroplating. The main advantage of pure titanium glasses frame is the texture is very light, in addition to the glass material has a "black gold" reputation of carbon fiber material, is pure titanium material made of Frameless Eyeglasses the lightest, and pure titanium anti-allergy, anti-corrosion, very durable! Recommended reading: Pure titanium New Arrival Eyeglasses Frames features.