There are revised product standards on roofing materials and ceramic tiles. I understand the new guidelines took effect on April 16, 2021. The product standards on roofing materials promote safety and quality,  while the mandatory certification of ceramic tiles is a form of restrictive government regulation . For the information ...

Source: Manila Bulletin (https://mb.com.ph/2021/05/01/on-roofing-materials-and-ceramic-tiles/?utm_source=rss&utm_medium=rss&utm_campaign=on-roofing-materials-and-ceramic-tiles)