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Our solutions have been in development for over 15 years and are continuously being perfected. We are constantly engaged in an intensive and thorough R&D on vocal problems, and our products development process involves experimenting on volunteering patients whose occupation involves using their voice. Our selected experimenters are people with extremely high sensitivities, so they could sense and report any change. They give us a detailed report on the consequences of using our products, thus validating the results. This is how we test, approve and improve our herbal remedy products, aiming at significant results in the short and long run.