As an assurance of our quality and to guarantee customer satisfaction, Grandroyal ceramic is certified by ISO, SNI, and KEMENKUMHAM. As a brief reference - ISO certification is the international standardization for various products and services, SNI certification is for National/Indonesian, and KEMENKUMHAM is for Ministry of Law and Human Rights. As can be seen in this page we have consistently had our products certified by all three of them and will continue to do so in the future.