Tosoh Quartz Corporation to Establish Subsidiary Corporation and Production Facility in South Korea

Tokyo, Japan—Tosoh Quartz Corporation, a group company of Tosoh Corporation that is headquartered in Tokyo, Japan, will establish a subsidiary corporation and a quartzware production facility in South Korea. It plans to have the subsidiary corporation established before the end of fiscal year 2020, and to start production at the production facility within fiscal 2021.

Tosoh Quartz Corporation will make a capital investment in South Korea as the nation plays a major role in the growing demand for semiconductors. The South Korea-based quartzware production facility will join its sister companies in Japan and Taiwan to further strengthen the company’s quartzware manufacturing capabilities. It will feature world-class technologies and will continue to expand on the expertise accumulated through the company’s operations in Japan and Taiwan to respond to the rising global demand for quartzware.

The global semiconductor and quartzware markets are forecast to expand. The forecast anticipates growing demand for semiconductors for increased smartphone data capacity, for Internet of Things (IoT) devices, for artificial intelligence (AI) uses, and for a rising number of automotive applications spurred by the advancement of electric vehicle and autonomous driving technologies. Tosoh Quartz Corporation’s implementation of its plans in South Korea will ensure that the Tosoh Group keeps pace with this rapidly expanding demand. The company’s Korean operations will also boost the profitability of Tosoh’s advanced materials businesses.


Company Name: (To be decided)
Date of Establishment: Fiscal year 2020 (the fiscal year ending March 31, 2020)
Business:   Manufacture and sales of fabricated quartzware
Facility Plans:     Acquire a building with a floor area of approximately 10,000 square meters and install state-of-the-art production equipment

About Tosoh Quartz Corporation

Date of Establishment: October 1936
Headquarters Location: Minato-ku, Tokyo
Business: Manufacture and sales of quartzware



Tosoh Corporation 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 ¥861.5 billion (US$7.8 billion at the average rate of ¥110.9 to the US dollar) in fiscal 2019, ended March 31, 2019.


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-looking statements are identified through the use of the word anticipates and other words of similar meaning. Actual results may differ significantly from the results expressed in forward-looking statements.

For more information, please contact


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