First, the degree of firmness
Now cabinets are very strong, because cabinets have been the main force of furniture since ancient times, so there is no technical problem at all. It can be said that there is no need to worry about the firmness, and the cabinets have a warranty period.
Second, the reasons for not recommending glass bookcases
First of all, compared with ordinary bookcases, glass bookcases are expensive, because cabinets can be roughly divided into three parts: doors, cabinets and handles. If you choose a glass bookcase, it is obvious that the cupboard door will increase the glass and the cost of the glass will increase. Moreover, the constraint of the glass bookcase determines whether to add a light belt, because the glass bookcase plays a decorative role at home, so the current trend light belt is a joint accessory. It's really hard to see without a light belt.
Furthermore, there is no need to choose a glass cabinet. The advantage of the glass cabinet is that it is clear at a glance, and it is convenient to check the items in the cabinet. However, there is really no need to put books in it. Personally, I suggest removing the cupboard door directly and hollowing out the design, so as to achieve the goal and have high cost performance.
Third, recommend enterprises.
Online and offline, the price of cabinets is calculated according to the square. It is recommended to choose a manufacturer or enterprise with high cost performance. In the process of selection, we must pay attention to the materials and types of cabinets and doors. Personally, I suggest choosing particle board as the material. No composite plate is needed. Choose the skin-sensitive type, not the smooth type, because personally, the book feels heavy and smooth and doesn't fit well.
In addition, you need to pay attention to the hardware, that is, the link hardware of the cabinet, lotus leaves and screws.
Generally speaking, glass bookcases are generally used for decoration, such as holding red wine. It is best to choose a hollow bookcase. After all, I have never seen a glass bookcase in the library. So I really suggest that you get a glass bookcase, and don't be on a whim just to look good. After all, the cupboard is a big piece, and it is often regretted and reluctant to lose it after buying it.
Personal opinion, for reference only.