Why do some fabrics have color on one side and some fabrics have color on both sides? Is there any difference in the process?

Why do some fabrics have color on one side and some fabrics have color on both sides? Is there any difference in the process?
Different textures: double-sided fabric has the same texture on both sides, and single-sided fabric has an obvious bottom surface. In layman's terms, single-sided cloth means one side and one shape, and double-sided cloth means that both sides are the same.
Different warmth retention: double-sided cloth is heavier than single-sided cloth, of course it is thicker and warmer
Different applications: double-sided cloth, more for children's clothing. Generally, adult double-sided cloth is rarely used. If you want to make thicker cloth, you can directly use brushed cloth or terry cloth.
Big price difference: The big difference in price is mainly due to the weight, the price per kilogram is about the same, but the weight of one-sided is much smaller than that of double-sided, so the number of rice per kilogram is much more, and the conversion is produced. , The illusion that double-sided cloth is more expensive than single-sided cloth.