| 摘要 |
<p>Building panels etc. for bath chambers and shower compartments, are joined together by fitting a rib of one panel into a groove in an adjoining panel, and are provided on one side with layer of plastic material, e.g. polyester resin reinforced with glass fibres that is thinner than the panel, and is bent over at the edge of the panel so that this bent over part forms at least one boundary face of a groove or rib.</p> |
