Identify the same construction, material definition, usable length, net hair weight and selling unit in each quotation. A lower price does not itself prove a different product, but a price comparison is incomplete when these fields differ.
For a supplier change, begin with one current SKU and a physical reference. Compare the new sample using the same documented wash, colour and attachment checks before considering a wider range.
| Specification field | Information to record |
|---|---|
| Material | Written definition for the selected product |
| Hair quantity | Net hair weight and usable length |
| Fullness | Method, threshold or measurement positions |
| Colour | Physical reference with root and blend placement |
| Construction | Weft, tape, bond or other attachment specification |

