Bay Carbon Bay Carbon is a manufacturer of silicon carbide-coated graphite and precision machined graphite. | ![]() KUMKANG QUARTZ KUMKANG QUARTZ (금강쿼츠) is a provider of quartz products for the semiconductor industry. | Hirai Hirai (平井 とする) is a company that designs, manufactures, and sells gas precision control devices for semiconductor manufacturing. | Thinkon Semiconductor Jinzhou Thinkon Semiconductor Jinzhou (思康半导体锦州, also known as ThinkonSemi) is a manufacturer and supplier of semiconductor raw materials. | ![]() Wuxi Shangji Automation Wuxi Shangji Automation (无锡上机数控股份有限公司) is a company that specializes in the development, production, and sales of precision machine tools for the solar photovoltaic industry. | |
Founding Date | Founding Date 1978 | Founding Date 1997 | Founding Date 1948 | Founding Date 2013 | Founding Date 2002 |
Type | Type Private | Type Private | Type Private | Type Public | Type Public |
Tags | |||||
Locations | Locations Bay City, US HQ | Locations Hwaseong, KR HQ | Locations Chuo City, JP HQ | Locations Jin Zhou Shi, CN HQ | Locations Wuxi, CN HQ |
Employees | Employees 913% increase | Employees 424 | Employees 131 | Employees 392 | Employees 6,34741% decrease |
Valuation ($) | Valuation ($) N/A | Valuation ($) N/A | Valuation ($) N/A | Valuation ($) 586.3 m | Valuation ($) 2 b |
Financial | |||||
Revenue (est.) | Revenue (est.) N/A | Revenue (est.) ₩151.9b (FY, 2021) | Revenue (est.) N/A | Revenue (est.) ¥432.1m (FY, 2025) | Revenue (est.) ¥7.2b (FY, 2025) |
Cost of goods | Cost of goods N/A | Cost of goods ₩111.9b (FY, 2021) | Cost of goods N/A | Cost of goods ¥242m (FY, 2025) | Cost of goods ¥6.6b (FY, 2025) |
Gross profit | Gross profit N/A | Gross profit ₩40b (FY, 2021) | Gross profit N/A | Gross profit ¥192.4m (FY, 2025) | Gross profit ¥768.8m (FY, 2025) |
Net income | Net income N/A | Net income ₩26.3b (FY, 2021) | Net income N/A | Net income ¥122.5m (FY, 2025) | Net income ¥186.4m (FY, 2025) |

KUMKANG QUARTZ (금강쿼츠) is a provider of quartz products for the semiconductor industry.
View companyHirai (平井 とする) is a company that designs, manufactures, and sells gas precision control devices for semiconductor manufacturing.
View companyThinkon Semiconductor Jinzhou (思康半导体锦州, also known as ThinkonSemi) is a manufacturer and supplier of semiconductor raw materials.
View company
Wuxi Shangji Automation (无锡上机数控股份有限公司) is a company that specializes in the development, production, and sales of precision machine tools for the solar photovoltaic industry.
View company