A Certificate of Conformity (CoC) is a document that certifies that a product or service meets the required standards or specifications. It is issued by an authorized party, which can be the manufacturer or an independent laboratory, and it affirms that the product or service conforms to legal safety and quality requirements). The CoC can be requested by a buyer to ensure that the product being manufactured has been tested and passes the set criteria within a specification and meets both technical and safety requirements, or it would be a mandatory requirement as stated by country regulations and law for certain products. The certificate may be obtained under contract, per consignment, or for serial production of commercial products). The CoC can serve many different purposes depending on the specific need, and it is usually required during customs clearance of goods to some countries. The CoC usually does not include specific test conditions, test specifications, parameters, and test details in terms of content, while the Certificate of Analysis (CoA) has more strict and specific content than CoC.