The Department of Trade and Industry (DTI) through the Bureau of Philippine Standards (BPS) issued Memorandum Circular (MC) No. 21-12, series of 2021 providing amendatory and supplemental guidelines for the implementation of Department Administrative Order (DAO) 20-09, series of 2020 or “The New Technical Regulation Concerning the Mandatory Product Certification of Ceramic Tiles”. The said continue reading : DTI issues supplemental guidelines for the certification of ceramic tiles