Golden Century International Holdings Group Limited is an investment holding company primarily engaged in coalbed methane gas exploration and exploitation; financial services including securities brokerage, money lending, consulting, asset management, and recommendation services; comprehensive healthcare products such as meltblown fabrics, masks, and related equipment; general trading of plastic and electronic components; and proprietary securities investments. The company operates through segments spanning energy, finance, healthcare, and trading, with coalbed methane activities focused on a 567.843 square kilometer exploration area in Anhui Province, People's Republic of China, alongside technology services for CBM development, liquefied natural gas operations, and wealth management offerings. It serves diverse markets including energy producers, financial clients, healthcare distributors, and traders, with principal operations in Hong Kong and the PRC. Incorporated in 2017 and headquartered at OfficePlus No. 303 Hennessy Road, Wan Chai, Hong Kong, the company changed its name from International Standard Resources Holdings Limited in March 2020 and completed the acquisition of SD Limited and SD Asset Management Limited from SD Financial Group in August 2020 to bolster its financial business segment.