The 'Five-fold Power Vacuum Bottle' was launched in the early days of the company and went on to become a popular product further down the road, but at the time of its initial release it was still only useful for hiking or traveling, and domestic demand was low.

However, the company continued to develop new products. These included a baby bottle with a teat over the opening (thermal baby bottle), and a vacuum bottle for sake that kept the sake inside warm. Many other amazing products went on to be developed, such as a container for ice cream, and a vacuum bottle for ayu fishing to refrigerate and transport freshly caught fish.