Quantum Thinking Limited, formerly Yunbo Digital Synergy Group Ltd. is a Hong Kong-based investment holding company principally engaged in the hardware-related business. The Company is also engaged in the provision of system integration services and other technical consultation services. The Company operates through three business segments. The Hardware segment is engaged in the sales of telecommunication and enterprise hardware products. The Software segment is engaged in the sales of enterprise software products. The Services segment is engaged in the provision of related maintenance and consultancy services. The Company is also engaged in the financing business and provision of payroll and administrative services for group companies in Hong Kong through its subsidiaries.