Greatwalle Inc., formerly King Force Group Holdings Limited, is a Hong Kong-based investment holding company principally engaged in the provision of security guarding services and mobile game businesses. Its security guarding services include patrolling, access control at the lobby entrance, making entrance records of visitors, stopping trespassers and handling and reporting complaints. The Company also provides guarding and personal escorting services and crowd management services in exhibitions, ceremonies and press conferences. Its mobile game businesses include the operation of gaming products and the research and development of computer and mobile software, including security software, advertisement sales management software, gaming platform operation software and payment software, among others. The Company mainly operates businesses in Hong Kong.