The world’s largest PET pavilion for Taipei Int’l Flora Expo POLLI-BRICKS: Green Building Material       An ark-shaped pavilion built from 1.5 million recyclable plastic PET bottles has already taken shape in Taipei.  Hailed as ‘the world’s lightest, movable, breathable environmental miracle’, the EcoARK pavilion is a 130-meter, nine-story pavilion that endorses the concept of environmental conservation. The POLLI-BRICKS, which is made of 100% recycled PET polymer quarried from the waste stream. POLLI-BRICKS significantly reduces the cost of constructing interiors and exteriors of buildings. Once these buildings are completed, operating costs drop dramatically.