Voluntary certifications play increasingly important and representative functions for companies in the industry. Possessing one or more certifications means for a company to be able to assure its customers that it is working methodically so that the quality and safety of the products it markets is always guaranteed. It means placing oneself on the market and being considered a reliable company, since it is certified by an absolutely independent third-party body. Certifications are a valuable and effective tool for companies with a view to continuous improvement and increasing the trust and loyalty of their customers.