 NORTH HUNTINGDON, Pa.--BUSINESS WIRE--The ExOne Company Nasdaq: XONE, the global leader in industrial sand and metal 3D printers using binder jetting technology, today announced an agreement to optimize its sand 3D printers for use with premium Naigai Cerabeads from ITOCHU Ceratech Corporation, a leading Japanese ceramic product manufacturer. Cerabeads are a premium ceramic foundry sand used to create molds and cores for metal casting high-value products in the automotive, oil gas, 