Certificate of Conformity

A Certificate of Conformity (CoC) is a written document issued by an exporter or manufacturer that certifies that a product complies with specific standards or technical specifications. It is commonly used in international trade as an important basis for customs clearance, bidding, and customer acceptance. Usage scenarios include: mandatory certification required by the importing country (e.g., EU CE, Saudi SASO), buyer's requirement for quality assurance, letter of credit negotiation, etc. Notes: 1) A CoC is different from a Certificate of Quality; the former focuses on a declaration of conformity, while the latter focuses on specific inspection data; 2) It must be issued by a qualified institution (e.g., SGS, TÜV) or by the manufacturer itself, depending on the importing country's requirements; 3) It must be strictly consistent with the contract and letter of credit terms to avoid document discrepancies; 4) Some countries require the CoC to be issued by a designated institution, otherwise it is invalid. Difference: Unlike an ISO certificate, a CoC applies to a specific batch of goods, not to an enterprise's quality management system.