| 摘要 |
<p>A high percentage of the population reacts allergic to nickel, cobalt, or chrome, materials used normally for the production of metal razor blades. The single blade or the twin blades integrated in the new design of a razor for wet shaving are made of ceramic material preferable aluminum oxide ceramic, known to cause no allergic reactions. The blades can be produced by injection molding or pressing.</p> |
