| 摘要 |
<p>Process for chemical engraving on rocky substrates, where the reserves are printed on the support using a resin which resists chemical baths, or are treated photomechanically by starting with a photosensitive gelatin (applied onto the support beforehand) which resists chemical baths. Applications: - decorative floor and wall coverings - furniture - town and professional sign panels - commemorative monuments - grave steles - tombstones - trophies - advertising and the like. or</p> |
