There are two types of production rate-up events: one that involves all four types of factory production (including heavy) on a rotating schedule, and one that is tied specifically to newly-released T-Dolls.

For simplicity’s sake, this article will refer to them as general rate-up and targeted rate-up respectively.

General Rate-Up

Since GFL EN’s release, general rate-up has occurred roughly three times a year. The official promotional image for the January 2020's General Rate-Up is included below for reference:

General rate-up events run for 8 consecutive days, broken up into 48-hour focus periods that run in the following order:

Day 1-2: Standard T-Doll Production Rate-Up

Day 3-4: Standard Equipment Production Rate-Up

Day 5-6: Heavy T-Doll Production Rate-Up

Day 7-8: Heavy Equipment Production Rate-Up

In other words, this will be the crafting schedule for the January 2020 rate up: