Quality assurance and control are designed to enhance organizational performance and earned considerable attention from industrial practitioners and scholars during the current decade. The reason is due the ever-growing universal pressures from consumers expecting superior quality of goods and services. as a result the competition in the global market environment has been increasing at fast pace. Since organizations are developing innovative strategy to satisfy the consumers demand. To this end, the present paper aims at examining the extent to which both quality assurance and control and performance of different business organizational scales (small-scale, medium-scale, and large-scale) are linked and how both quality assurance and control influence the business corporations’ performance in a highly competitive environment. The scope is on South African food manufacturing industries. This paper is expected to assist to determining and discovering the impact of quality assurance and control at manufacturing companies level, whether the quality assurance and control systems of South African food manufacturing industry enable a smooth inter-company relationship, enhanced supply chain management activities, determining whether the quality of food produced are recognized by the Food and Agriculture Organization.