Narumi Corporation’s project is driven by the mission to “protect the dining tables of the future” and aims for environmentally conscious, sustainable manufacturing.
This initiative began with the goal of effectively utilizing eggshells, a resource that had not been sufficiently leveraged by other industries, thereby contributing to the efficient use of resources and the reduction of environmental impact.
They focused on the common element of “calcium”—specifically, calcium phosphate, one of the main raw materials for bone china, and calcium carbonate, which is abundant in eggshells. This commonality led to the research and development of using eggshells to replace 15% of the conventional bone china raw materials.
At NARUMI, sustainable manufacturing means pairing craft with innovation. This latest initiative turns eggshells into a valuable raw material.
Eggs and bone china share a common element: calcium. NARUMI Bone China uses over 40% calcium phosphate (bone ash), while eggshells are composed of over 90% calcium carbonate. Applying decades of grinding and firing expertise from bone china production, we have turned eggshell byproducts into an upcycled material. They have already begun integrating it into the bone china body across their production line, and will gradually increase its share over time. This shift reduces reliance on conventional resources and supports a new line of business: producing and supplying eggshell-derived calcium powder for use in tableware and beyond.
