Procurement of raw materials (human hair, braided hair) specifications : 1. 90 cm to 160 cm 2. 50 cm to 70 cm 3. 35 cm to 45 cm 4. 25 cm to 30 cm Requirements : (1) raw material (human hair, braided hair) dry without impurities, (2) the calculation of the length (from head to tail measured the length after reduction of 5 cm or 10 cm , that is the length of the hair) Show More