The cost is the sum of several factors The technical certification file is a tailored suit that depends on several influencing factors in such a way that each one must be analyzed specifically in order to prepare a personalized offer. Some of the factors that determine the cost of this certification are: Category of equipment to be certified, whether it is certified as electrical or non-electrical equipment. Assessment of complexity: whether it is a more or less complex and/or unique piece of equipment or machine that requires the application of specific regulations. The requirement for tests:  justifications that require the performance of tests and/or trials. Expertis of the manufacturer: if the manufacturer already has previous experience in the construction of similar equipment or this is not the case and requires closer support, in the design of the machine in terms of application of the specific safety requirements as a machine / equipment to certify in ATEX.