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 decorative effects of lampshades of different materials are also very different. Let's take a look at these lampshades.

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.

In addition to using paper, bookmarks can also be made of high-quality metal.

Though plastic cards are cheaper in price, but metal cards are more attractive in good quality. Basing on the metal etching process, metal cards are easily to be hollow or half etched with different kind of logo or shapes with design flexibility. We are doing one stop service for metal car......

The shape of a lampshade should be consistent with the outline of the lamp. If the lampholder has a curve, the lampshade should also choose a curved lampshade. If it is flat, choose a straight lampshade. The lamp with a heavy chassis and a tapered lampshade can make it look. Go up lighter.