Tokai Carbon (TYO:5301) has temporarily shut down equipment operating at its Tanoura plant at the time of a magnitude 7.1 earthquake in Kumamoto, Japan, according to a Tokyo bourse filing on Wednesday.
The temporary shutdown excluded some systems such as environmental facilities.
The maker of carbon-related products has not identified any severe injuries or casualties among employees working at the site.
The earthquake did not cause major damage to buildings or equipment, while a partial water outage has not impacted the cooling water circulation system for primary equipment.
The company is currently assessing the condition of production facilities and inventory as well as the earthquake's financial impact, with any observed material impact to be announced promptly.
The Tanoura plant is the primary manufacturing hub of the company's fine carbon business.
Shares of the company slipped more than 1% in recent trade.