Quantum D C Public Company Limited operates food and beverage and office-building rental businesses in Thailand. It offers office building rental services, consulting, information technology system development and implementation, electricity and steam generation, solar panel installation, and distribution of cameras, camcorders, mobile devices, and computer equipment. The company was formerly known as JCK Hospitality Public Company Limited and changed its name to Quantum D C Public Company Limited in November 2025. Incorporated in 2004, it is headquartered in Bangkok, Thailand.