A sofa is a cushioned, multi-seat chair. A backrest chair with spring or thick foam, etc., and arms on either side.

The origins of the sofa can be traced back as far as 2,000 years ago to ancient Egypt. At that time, people used wooden posts or stones to make tools for people to sit on. Later, they found that it was more comfortable to sit on top of animal skin, which was the prototype of the sofa.

A deckchair made of ivory and ebony has reached a high level of workmanship, among the Pocreary furniture found in the famous historic city of Pompeii.

Earlier sofas with soft bags appeared in the late 16th and early 17th centuries. Sofas at that time were filled mainly with natural elastic materials to create a soft surface for human contact.

The main materials are horse hair, bird feathers, etc., with natural goose down outside, embroidery, or other fabrics. It is not only more comfortable than a hard seat, but also more gorgeous. This kind of product was welcomed by people as soon as it appeared.

Sofa according to the functional classification can be divided into the functional sofa, fixed back sofa, infinite automatic sofa, electric sofa, and sofa with TV.

Sofas have become essential furniture in many homes.

The sofa on the market generally has a low-back sofa, a high-back sofa, and between the first two ordinary sofas three. The following are three kinds of characteristics.

The low-back sofa is a relaxing light chair. It supports the user's waist with a support point. This sofa has a lower back height and a smaller Angle. Not only conducive to rest but also to reduce the size of the entire sofa periphery.

This kind of sofa is more convenient to move and occupies a small area.

The high-back sofa is characterized by three fulcrum points, so that people's waist, shoulders, and the back of the head are at the same time against the curved back. The three support points do not form a straight line in space, so the production of this sofa technology requirements are higher, and the difficulty of buying is relatively large.

Making the wooden frame of the high-back sofa must be done on the shelf of the three points of the transition surface, otherwise, it is difficult to ensure the position of the support point when the sofa is covered and other processes, bring an uncomfortable feeling to the user.

The ordinary sofa is a common kind of sofa used in the home. It has two supports for the user's lumbar and thoracic vertebrae, giving the effect of matching the curved surface of the back of the body.

The Angle between the back of this kind of sofa and the seat surface is very important. Too large or too small an angle will cause the user's abdominal muscles to be strong and produce fatigue. Similarly, the width of the sofa seat should not be too large, usually according to the standard requirements within 540 mm, so that the user's calf can be adjusted at will to sit, and rest more comfortably.

If you're going to buy a sofa, there are a few things you should know.

1. Care. For the newly bought sofa, what to do is wipe the dust on the surface of the sofa with a towel. Then gently wipe the surface of the sofa with the care agent. This will create a protective film on the surface of the sofa for easier cleaning later. It should be noted that the care agent must not be used with waxy products to prevent damage to the sofa.

2. Avoid the sun. If the living room often has sunlight exposure to the sofa, the need to change the position of several sofas every once in a while, to prevent the color difference is obvious. If it is a place with high humidity, you can use the sun from eight to ten in the morning for seven days. One hour a day, about once every three months.

3. Avoid oil stains. If stains are found on the sofa, they should be cleaned immediately with leather cleaner.

4. Daily care. The daily care of the sofa just needs to be wiped down with a wet washcloth wrung out.