Hello, BV is a testing organization, also known as French International Inspection Bureau and French Classification Society. The purpose of testing is to check whether the goods meet the industry norms or export certification standards. As for who will pay the expenses, you need to negotiate with the importer, how to sign the contract, and whether there are any regulations. I don't know what your export commodities are. Country of export destination? If necessary, you can call me and :Fanny@aovt.com will give you a detailed answer!