IATF16949 is a technical specification for the international automotive industry, based on ISO9001 and incorporating technical specifications for the automotive industry. This specification is fully consistent with ISO9001:2015. But it is more important than defect prevention, reducing quality fluctuations and waste that are prone to occur in the automotive parts supply chain. The IATF16949 certification standard includes a focus on customer centricity; Two basic points, customer satisfaction and continuous improvement; Three representatives, management representative/customer representative/quality representative, etc.