How are human hair wig grades explained from single drawn to double drawn?

135%-145% density lace front chin-length layered bob human hair wig

I get this question weekly from brand owners and procurement teams comparing vendor quotes side by side: same “10A” claim, wildly different density at the ends, and a price delta that makes no sense on paper. In my experience, the confusion stems from mixing two systems—technical “drawn” ratios (a real manufacturing step) and the unregulated […]