1. naked eye examination: color difference test method of color pure cotton cloth belt: naked eye observation belt body without Yin and Yang color, color, pattern (each and the needle edge must be a color) roll edge, cloth edge can not be exchanged.

2. Mao Yu of the colored pure cotton belt: through naked eye observation, the two surface and side of the Trademark Ribbon can not have serious wool ball or wool that affects the surface.

The above are the 2 common methods of the small colored woven cotton belt, which are sorted out by the ribbon industry.