Taichang Jewelry Store (Historic) was founded in 1920 by Zhou Yaoqiang in Xiashan, Shantou, originally operating as Taichang Trading House. In its early years, the business focused on daily necessities and imported goods, soon expanding to gold and silverware to meet the needs of the local community.
Longjin relocated from Shantou to Shenzhen, earning recognition as an Executive Director Member of the China Gems & Jewelry Association and as a Vice President Member of the Guangdong Gems & Jewelry Association. It was also accredited by the State Administration of Quality Supervision for its certified standards.