Golden Century International Holdings Group Limited, an investment holding company, engages in the exploration and exploitation of the coalbed methane (CBM) gas in Hong Kong and the People's Republic of China. It operates through Coalbed Methane, Financial Business, Proprietary Investment, General Trading, and Comprehensive Healthcare segments. The company explores for CBM with a total exploration area of 567.843 square kilometers in Anhui Province, China, as well as provides technology services for CBM development and utilization. It also engages in securities brokerage and trading, money lending, general trading, and consultancy and referral service businesses. It engages in sale of meltblown fabrics and related equipment and masks; sale of plastic components; offers secretarial, financing, and corporate services, as well as insurance brokerage and asset management activities. The company was formerly known as International Standard Resources Holdings Limited and changed its name to Golden Century International Holdings Group Limited in March 2020. Golden Century International Holdings Group Limited was incorporated in 2017 and is based in Wan Chai, Hong Kong.