Quest Co., Ltd. is a company mainly engaged in the information services business. The Company operates in two business segments. The System Development segment is involved in the provision of software development services, including the consulting, design, development and maintenance of systems for customers in a wide range of industries, including manufacturing, finance and telecommunication. The Infrastructure Service segment is engaged in the provision of support services for infrastructure operation, including infrastructure building, technological services, system operations, supervision, helpdesk and field support. The others business is involved in data processing business and purchase and sale of products.