| 摘要 |
<p>Cleaning device contains sulfur material which reacts with a reaction material to form a surface-cleaning sulfate compound. The sulfur material is released over time over the surface to be cleaned. Preferred Features: The reaction material is an elementary reaction metal and/or a compound containing the elementary metal and/or a material mixture containing the metal and/or compound. The reaction metal is zinc and/or copper and the sulfur material is a sulfide, sulfate, sulfoxide and/or organic sulfur compound and/or a material mixture containing sulfur or sulfur compound.</p> |
