Company History

The Company was established as Yamatetsu Seitojo in 1887 in the City of Seto (Aichi Pref.) famous for its porcelain industry.
In 1957, the Company has moved to its current location within the same city and incorporated under the trade name of Maruwai Advanced Ceramics. Since then, the Company has come to manufacture sintered tubes, electrical insulating bobbins and ceramic insulator though ongoing research & development activity in materials selection and form shaping.
The Company offers wide range of materials to meet needs in multiple industry sectors; such as alumina, magnesia, steatite, mullite, cordierite, silicon carbide, silicon nitride and zirconia.
In response to the increasing needs in ultra-high temperature processing, the Company manufactures from various materials the component of industrial apparatus and home appliances, such as ceramic insulators for electric heaters, for which high level of heat resistance and electrical insulation are vital factors.

Year Events and Developments Product Development
1887 Tetsu Kato established Yamatetsu Seitojo in Minaminakanokiri-cho, Seto City Started producing western tableware.
1895 Changed business into electrical porcelain production and began manufacturing low-voltage porcelain tube. Started producing porcelain insulator.
1935 Hiroo Yano succeeded the business and incorporated under the trade name of Yano Seitojo.
1957 Incorporated under the trade name of Maruwai Advanced Ceramics.
Built second manufacturing facility (the current headquarter) and clay production facility in Kitawaki-cho, Seto City.
1958 Moved headquarters to Kitawaki-cho, Seto City (the location of former second manufacturing facility).
1959 Introduced extrusion machines for form shaping. Started producing alumina insulator (pipe insulation).
1962 Newly built the current headquarter factory.
1976 Kazue Yano assumed the presidency. Started producing mullite products
1977 Started direct sales to manufacturers in the domestic market Started producing magnesia pipe insulation.
1993 Expanded the press form-shaping facilities. Started producing high-purity magnesia products.
1996 Expanded the extrusion form-shaping facilities. Started commercial production of high-purity magnesia pipe insulation.
1997 Expanded the clay production facilities. Started producing refractory setter.
1998 Entered into a strategic alliance with Mitsubishi Materials Corporation. Started R&D on ceramic filter for environmental protection.
Introduced injection molding machines. Started R&D on non-sintered products.
1999 Succeeded the electrically fused magnesia setter business from Mitsubishi Materials Corporation. Started commercial production of magnesia / alumina crucible.
Newly constructed electrically fused magnesia factory. Started producing stabilized zirconia parts
2000 Succeeded the magnesia pipe insulation business from Ako Kasei Co.,Ltd. Started producing protection tubes.
Expanded the extrusion form-shaping facilities.
2001 Expanded the ceramic processing facilities. Started producing spinel.
Expanded the cold isostatic pressing facilities.
2002 Expanded the ceramic processing factory. Started commercial production of wear resistant zirconia parts.
2003 Expanded the injection molding facilities and cold isostatic pressing factory. Started producing calcia / yttria crucible.
2004 Newly constructed second factory in Kyoeidori, Seto City to expand its injection molding business. Started commercial production of injection molding products
2005 Renovated headquarter factory. Started producing 99% pure silica products.
2006 Jin Yano assumed the presidency.
Expanded chemistry laboratory instruments business and high heat refractory business.
2007 Conducted business process improvement.
2010 Divided its business into two divisions: Ceramic Products Division and Ceramic Processing Division.
2013 Added experimental production line for developing new materials, in addition to the existing three extrusion production lines.