Amann Strongbond Industrial Thread
Strongbond is Amann's Bonded Nylon thread. Most bag makers use T70 or T90 for construction and T90 to T138 for topstitching. Below is the color chart. Unfortunately not all colors are available in every size. Also sometimes the "unusual" colors (such as Rainbow, or bright magenta) are not always in stock and get back-ordered)
Here is the Amann Strongbond Color Chart