permalink (plural permalinks) A static internet address to an individual blog entry or news item on the World Wide Web. Translations
Four Types of Ceiling Tiles. There are four broad types of ceiling tiles - acoustical, plastic, tin and cork. Within those categories there is a further break down of tiles by design, installation and use. Acoustical ceiling tiles are used to help soundproof a room.
Enrobed tiles. Amongst the most valuable types of Mahjong tiles are enrobed tiles. These are bakelite or catalin tiles that have lighter inside enrobed in different-color (usually darker) frame. Check out a glorious example at Cool Old Games.