Bookmarks are small slices that are clipped in a book to record the progress of reading. With the development of the Internet age, electronic bookmarks have been derived to record reading progress and experience.
The decorative effects of lampshades of different materials are also very different. Let's take a look at these lampshades.
The sealing principle is that the two joint surfaces squeeze the copper ring to deform, so that the two surfaces of the copper gasket and the two joint surfaces are closely attached without any gap, thereby obtaining a sealing effect.
The application of copper gaskets is extremely wide, and the pre-tightening load required by the gaskets is also different. So what are the advantages of using copper gaskets?
Many people think that the lampshade is for decoration and good-looking, but the role of the lampshade is more than that.
The solid copper washer is processed by mechanical cutting and other methods, and its excellent flexibility can fill the uneven part of the flange surface.