Cellulose Sponge Technology Corporation boasts the most eco-friendly sponge manufacturing process for a natural, plant-based, compostable sponge you can feel good about using. Our state-of-the-art facility, located in Tlaxcala, Mexico, is part of an elite, environmentally conscious business park that exceeds national environmental regulations. Every measure is taken during the manufacture of our natural cellulose sponges to minimize air and water pollution.