Power Torque Tools are made by Tohnichi Mfg. Co., Ltd. They are a Japan-based organization and have its headquarters in Tokyo. However, they do have dealers in the US as well that will be helping you out to make it work properly for sourcing any of the tools from them or trying to get spares or services for any of these.

If we’re still going under the assumption that these tools are a re-brand of the older GM Performance Part Tools, we can probably assume they are made in the same place. This would mean that Power Torque Tools are made in Taiwan, where the previous brand made their tools.