This subsection focuses on whether brands are publishing supplier lists, focusing on the level of detail provided at three different levels: 

1. The factories where clothes are made are often referred to as the first-tier or tier 1 manufacturers — in other words, the facilities with which brands have a direct relationship and typically do the cutting, sewing and final trims of products; 
2. The processing facilities further down the supply chain — knitting, weaving and spinning mills, wet processing, embroidery, printing and finishing, dyehouses, tanneries and laundries; 
3. The suppliers of raw materials — primary materials such as fibres, hides, rubbers, chemicals and metals.

In this research, the methodology is more concise to focus on decarbonisation. Some indicators typically reviewed in the traceability section of the Global Fashion Transparency Index have been removed.