Send it to everyone and sit down. In many country banquets, benches and plastic chairs are also used as seats. The existence of this kind of plastic clothing can be seen in many places in life. There are also specially reinforced thicker plastic chairs in kindergartens for children to use. Plastic has been widely used, mainly because of its simple production and low cost, and it is not easy to cause harm to the human body. For example, if some children accidentally bump into the corners of plastic, it will not cause much impact. The nature of plastic itself is relatively soft, so sometimes if you buy low-quality plastic, there will be a risk of sitting and cracking. Friends who often see this kind of plastic will find that there is always a hole in the middle of the plastic chair, and this hole does not seem to have been accidentally made, but it is specially made like this, why is this? The reason?

The reason why the chair has such a large cavity is mainly because if it is made completely solid during the production process, it is difficult to take it out of the mold and make it with holes, which is better and easier to demould.

Another reason is that we all know that plastics are not absorbent and usually do not breathe well, and we usually feel cooler when we are wearing light clothing and sitting on wooden or metal chairs. Sitting in a plastic chair can feel very stuffy, and it's even more uncomfortable after sweating. After adding small holes to the chair, this problem can be solved very well.