Outdoor Patio Furniture Polymer Sofa manufacturers tell you that sofas can be classified into functional sofas, fixed-back sofas, stepless self-control sofas, pneumatic sofas (ie: manual sofas), electric sofas, and sofas with TV according to their functions.

Sofa has been necessary furniture for many families. There are generally three types of sofas on the market: low-back sofas, high-back sofas, and ordinary sofas between the former two. The following are three characteristics for consumers to choose to buy.
Low-back sofa: a light chair that belongs to the rest type. The manufacturer of Outdoor Patio Furniture Polymer Sofa tells you that it uses a support point to support the user's waist (lumbar spine). The height of the backrest of this sofa is relatively low, generally about 370 mm from the seat surface, and the angle of the backrest is also small, which is not only conducive to rest , and make the whole sofa peripheral dimension reduce accordingly. The sofa is more convenient to move, light and handy, and occupies a small area.
High-back sofa: also known as aviation seat. It is characterized by three fulcrums that allow the person's waist, shoulders, and back of the head to lean against the curved backrest at the same time. The manufacturer of Outdoor Patio Furniture Polymer Sofa tells you that these three support points do not form a straight line in space, so the technical requirements for making this kind of sofa are relatively high, and it is relatively difficult to choose when purchasing. To make a wooden frame for a high-back sofa, it is necessary to clearly make a turning surface composed of three points on the shelf. Otherwise, it will be difficult to ensure the position of the support point when performing processes such as sofa masking, which will bring discomfort to the user. When purchasing a high-back sofa, pay attention to whether the composition of the three support points on the back is reasonable and appropriate, which can be judged by the test stand. The high-back sofa evolved from a lounge chair. In order to improve the rest performance, it can also be used as a footrest. Before placing the sofa, its height can be the same as the front edge of the sofa seat.
Ordinary sofa: It is a common type of sofa in the home. Most of the sofas sold on the market are of this type. It has two support points to support the user's lumbar spine and thoracic spine, and can achieve the effect of matching the curved surface with the back of the body. The manufacturer of Outdoor Patio Furniture Polymer Sofa tells you that the angle between the backrest and seat surface of this type of sofa is very important. If the angle is too large or too small, the user's abdominal muscles will be strong and fatigued. Equally, the width of sofa seat surface also should not be too large, usually within 540 mm according to the standard requirement, so that the user's shank can adjust the sitting posture at will, and have a rest more comfortably.