Choi Industries is a subsidiary of Choi Enterprises. The company created the 16th Flash suit in an erased future.
At some point before 2049, Ryan Choi created the 16th Flash suit. This suit, along with other models, was stored in a box in the Time Vault.
In 2049, Nora West-Allen entered the time vault and found a box of Choi Industries with the 16th suit, which she took.