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Anonymous users2024-01-23Hello! First of all, please refer to my related article to correctly understand your own problem and seek appropriate treatment. The key is how to treat this problem, which is basically not solved by modern medicine, and it is recommended that Chinese medicine treat the symptoms. Zhang Xindong.
Reply expert: Nanjing Hospital of Traditional Chinese Medicine - Andrology (Andrology Research Institute) - Attending Physician Zhang Xindong.
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Anonymous users2024-01-22Introduction to sofa classification:
Sofa is one of the indispensable upholstered furniture for home life. Generally, upholstered furniture is divided into two categories: leather sofa and fabric sofa according to the different surface materials of the product; It can also be divided according to the structure of the sofa, including inner frame, outer frame, steel and wood combination, etc. The price varies depending on the material used in the sofa.
From the current classification of the industry, there are the following methods:
Categorized by Usage Function:
Single-use sofa: a sofa that only has a sitting function, and generally does not need to be marked.
Dual-purpose sofa: A sofa with a sitting and lying function.
Tri-purpose sofa: A sofa that has the function of sitting, lying and storing things.
Classification by seat front width:
Single Sofa: A sofa for single sitting.
Two-seater: A sofa for two people to sit on.
Three-seater: A sofa for three people to sit on.
Modular sofa: A sofa that is composed of multiple monomers and can be arranged into a certain shape for multiple people to sit.
Classification by cladding material:
All-leather sofa: Except for the bottom of the sofa seat, the exterior is covered with natural animal leather.
The main parts of the leather sofa: the seat of the sofa, the back to the front, the upper edge of the backrest, the inner side of the armrest and the upper surface of the armrest, all use leather sofas made of natural animals.
Fabric sofa: Sofa made of flocked, cotton and yarn-dyed fabrics.
Classification by sofa frame material:
Metal bone sofa: the use of metal or metal and wood as the main skeleton materials.
Wooden skeleton sofa: a sofa that uses wood or various wood-based panels as the main skeleton material.
Frameless sofa: The entire sofa product is made of soft materials such as styrofoam.
Classified according to the elastic material of the sofa seat surface:
Concave coil spring sofa: The main elastic material of the seat surface is a sofa made of concave springs and foam.
Snake spring sofa: The main elastic material of the seat is a sofa made of snake spring and styrofoam.
Sponge sofa: The main elastic material of the seat is a sofa made of elastic bandages and/or styrofoam.
Hybrid spring sofa: The main elastic material of the seat surface is the seat spring core composed of concave coil springs, snake springs and other forms of springs, and the sofa made of foam plastic.
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This is the case when the raw material (i.e. before the furniture is made) is not dried enough, so that the furniture will crack in dry weather after it has been formed, and the thinner panels will crack and warp. The material of your dining table is in a state of high water content and water loss in a dry environment, and it will continue to shrink and crack. Since the merchant refuses to return or exchange, it is recommended to give them a deadline, and directly tell them that they will not return, and put these furniture pictures, brands, manufacturers, and sellers on the Internet, so that they can "prosper in business" and make consumers vigilant.
It's not that the sofa is too soft, it's a habit of people and the width of the sofa. When you can sit, sit in and sit with your butt against the backrest, so that you will sit very straight, just like sitting on a bench when you were a child, and it is easy for children to sit up straight if the bench is not deep enough.
Dear, this proves that the material of this sofa is not good, the sponge and the spring inside are not! You can negotiate an exchange or return!
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