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The unit of fabric thickness, ampere, is a unit of thickness, also known as an ounce, which is a type of weight unit. When used on denim fabric, it refers to the number of ounces per square yard of weight, which indicates the tightness of the cotton thread in jeans. According to different thicknesses, commonly used ones include 4.5oz, 6oz, 8oz, 10oz, 11oz, 12oz, etc. The smaller the value, the thinner the fabric