3 8 drywall screws

A barbed rope is literally a kind of barbed rope. Generally speaking, the material is made of iron wire or copper wire. People have a very long history of using barbed ropes, as early as the 19th century Americans began to use the first barbed ropes. Function: Its first function is agricultural fence. The origin of the thorn rope is in agriculture. People used the thorn rope to divide the fields into different pieces. Barbed wire is also widely used in fencing until now. Secondly, it is used for protection and protection. For example, people put barbed ropes around the walls of their houses to prevent people from climbing over the walls and entering the yard. There are many other functions such as fire prevention and theft prevention.

As we all know, the mechanism of resistance to atmospheric corrosion of zinc includes mechanical protection and electrochemical protection. Under the condition of atmospheric corrosion, there are ZnO, Zn(OH)2 and basic zinc carbonate protective film on the surface of zinc layer, which to a certain extent slows the corrosion of zinc. When this protective film (also known as white rust) is damaged, a new film will be formed.

Bird cage to keep clean, bird cage is the birds often live and activity place, so the bird cage should not only have a place to put water and food, but also need to be cleaned regularly to the bird cage, so as to reduce the parasite.