Copper alloy is generally the material chosen for low-end discountglasses frames, and its characteristic is that it is very soft, so it is easy to deform. Even simple removal and wearing actions can cause the frame to deform, so it is not suitable for making glasses with high stability requirements.

Copper alloys have poor corrosion resistance and are prone to rusting; Low low-cost, easy to process, and can be divided into zinc white copper, brass, bronze, copper-nickel zinc tin alloy, etc.

Acetate fiber is a thermoplastic material. The characteristics of acetate fiber are that it is not easy to burn and does not change color under ultraviolet radiation. It has good transparency, luster, coloring, absorption, dimensional stability, processing and shaping properties, and impact resistance.

Nylon is a thermoplastic material with excellent heat resistance, impact resistance, and wear resistance. It has high plasticity and reducibility, great strength, is not easy to break, and has a wide temperature range of use; The disadvantage is high water absorption and poor dimensional stability, making it suitable for making sports and children's eyeglasses frames.

The size of the kid's eyeglasses near my frame and the size of the pupil distance can affect the horizontal displacement of the lens during processing. Normally, there will be a certain amount of displacement, but the displacement should not be too large, otherwise, it will cause the edge thickness of the myopia lens to be thicker and the lens diameter to be insufficient. Therefore, it is recommended that the frame size should not be greater than the pupil distance by more than 10mm.

The temporal distance refers to the distance between two temples, and the appropriate frame width should cover the temples from the front.