Tosoh Quartz Corporation Responds to Surging Global Semiconductor Demand with a New Facility at Its Yonezawa Factory

Tokyo, Japan— Tosoh Quartz Corporation, a wholly-owned subsidiary of Tosoh Corporation headquartered in Yamagata City, Yamagata Prefecture, announced, that it will construct a new manufacturing facility at its Yamagata-based Yonezawa Factory. The new facility is Tosoh Quartz Corporation’s response to the global expansion of the semiconductor market and is expected to be in operation in February 2019. Construction is scheduled to begin in August 2018 and will cost approximately 4 billion yen.

The global semiconductor market has expanded in recent years because of such factors as increasing storage capacity of smartphones and heightened demand from data centers. Sharp rises in demand are forecast for semiconductors for IoT-enabled devices and for AI applications. Demand for semiconductors for in-vehicle systems is also expected to grow with advancements made in electric vehicle and autonomous-driving technologies.

When completed, Tosoh Quartz Corporation’s new facility will enable it and the Tosoh Group to meet the expanding demand for semiconductors equipment parts worldwide. The new facility will feature the latest equipment and a floor area of 3,900 square meters. The facility will contribute to a supply structure capable of handling the growth in demand. It, in turn, will strengthen the profitability of Tosoh’s Advanced Materials Division, of which Tosoh Quartz Corporation is a part.

(Image of completed facility)
Tosoh Quartz Corporation New Manufacturing Facility

Tosoh Quartz Corporation

 Date of 

October 1936
 Location:  Yamagata Prefecture, Yamagata City 
 Business:  Manufacturing, processing and sales of quartz glass products



Tosoh is the parent of the Tosoh Group, which comprises over 100 companies worldwide and a multiethnic workforce of over 12,000 people and generated net sales of ¥743.0  billion (US$6.9 billion at the average rate of ¥108.35 to the US dollar) in fiscal 2017, ended March 31, 2017.


Tosoh is one of the largest chlor-alkali manufacturers in Asia. The company supplies the plastic resins and an array of the basic chemicals that support modern life. Tosoh’s petrochemical operations supply ethylene, polyethylene, and functional polymers, while its advanced materials business serves the global semiconductor, display, and solar industries. Tosoh has also pioneered sophisticated bioscience systems that are used for the monitoring of life-threatening diseases. In addition, Tosoh demonstrates its commitment to a sustainable future in part by manufacturing a variety of eco-products.

Stock Exchange Ticker Symbol: 4042


This document may contain forward-looking statements, including, without limitation, statements concerning product development, objectives, goals, and commercial introductions, which involve certain risks and uncertainties. Forward-

For more information, please contact


Jeff Markley
International Corporate Development
Tosoh Corporation
Tel: +81 3 5427 5118
Fax: +81 3 5427 5198