Daiso The research and development of Daiso filler started nearly 30 years ago, and it is still improving and innovating technology to keep it in the forefront of the world. All of Daiso's silicone fillers are manufactured and bonded at the niyazaki plant, pure "made in Japan." Daiso fillers range in mass production from 50g to 100kg per batch, with the most conventional models usually in stock of several hundred kilograms.