High transparent nylon PA12 Swiss EMS TR90 optical frames and glasses frame polymer material TR-90 (Plastic titanium) is a memory, and is currently the most popular ultra-light frame material with super toughness, crashworthiness wear , low coefficient of friction, which can effectively prevent the movement, because the frame fracture, friction on the eyes and face causing injuries. Its specific molecular structure, good chemical resistance, high temperature environment is not easy deformation, a short 350 degree heat resistant, easy to melt and burn. No chemical residue release, in line with European requirements for food grade material. TR90 frames surface lubricity, density 1.14-1.15, will float on the salt, than other plastic frames lighter, less with about half the weight plate frame, 85% nylon material, can reduce the nose, ears burden for young people to use . It is abrasion resistance, chemical resistance, solvent resistance, weather resistance, non-flammable, high temperature. And it is the memory of a polymer material, resistance to deformation index 620kg / cm2, easy to change. Because the frames TR90 material flexibility, toughness, prone to breaking, strength, not broken, and therefore have a movement security. And it is very resistant to impact: nylon material is more than two times, ISO180 / IC:> 125kg / m2 flexibility to effectively prevent damage in the movement of the eye due to an impact generated. TR90 material glasses and nylon material comparison, TR-90 frame material has the following characteristics: 1, light weight: about half of the plate frame with less weight, 85% nylon material, reduce nose, ears burden, so wear lighter comfortable. 2, colorful: more vivid colors better than ordinary plastic frame. 3, impact resistance: more than twice the nylon material, ISO180 / IC:> 125kg / m2 flexibility to effectively prevent damage in the movement of the eye due to an impact generated. 4, temperature: 350 degrees for short periods of high temperature resistant, ISO527: resistance to deformation index 620kg / cm2. Easy to melt and burn. Frame easily deformed difficult to change, to make frames to wear longer. 5, security: no chemical residue release, in line with European requirements for food grade material. TR90 material than any other pc, cp, etc. spectacle frames material is much more expensive, but also more stringent production process, so TR90 frames price than other several times more expensive. A, memory materials glasses feature a transparent nylon, high temperature: the melting point of 280 degrees; 105 degrees or less deformation; 2, light texture: 85% nylon; 3, impact resistance: more than 2 times; ISO180 / IC:> 125kg / m2 4, the same type (plastic memory material): ISO527; resistance to deformation index 620kg / cm2 5, flexibility, toughness, not broken; 6, non-toxic; high transparency, good weather resistance. B, the advantage for the glasses: 1, reducing the nose, ears burden (light texture); 2, especially for sports mirror: impact-resistant, and there is no sense of burden for a long time to accompany wear; 3, with sports security: flexibility, toughness, not broken; 4, no harmful release, the human body without harm.