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In general, a mattress consists of three main parts: nets (springs) + fillers + fabrics. Today we will start with these three points! 
The 1 bed net (spring) spring is the heart of the whole mattress. The quality of a mattress is determined directly by the quality of a bed net. The quality of a net is determined by the spring coverage, the texture of the steel, and the spring. The core diameter and caliber determine other factors. Coverage : refers to the proportion of the area occupied by the spring in the entire bed net area. In general, the higher the spring coverage, the better the quality of the mattress. According to state regulations, the spring coverage of each mattress must be above 60% to achieve compliance, and the number of springs per mattress is as high as possible. 500-700, coverage of up to 80%, far beyond the national standards. The texture of the steel : Each spring is surrounded by a series of steel wires. If the spring is made of untreated ordinary steel, it is fragile and causes the spring to break. Xilaijia spring wire has been carbonized and heat-treated to ensure the spring's elasticity and toughness. Caliber : refers to the diameter of the ring on the outermost surface of the spring. Generally speaking, the thicker the caliber, the softer the spring. Core diameter : refers to the diameter of the middle spring ring. In general, the more regular the core diameter is, the harder the spring is, and the stronger the supporting force is. The springs of every bed net of Xilaijia have undergone repeated tests, and then various soft and elastic bed nets have been made according to the different needs of consumers, thus satisfying the needs of consumers and guaranteeing each one. The quality of the mattress. 
2 Filler In order to improve the function and durability of the mattress, in order to ensure the comfort of the mattress, some fillers are added to the surface of each bed, including parallel net, brown, sponge, knitted fiber cotton, and non-woven. Cloth and so on. Role : Non-woven fabric: separates the bed net from the filler and cushions the friction of the bed net and the filler. Parallel network : balances and disperses the pressure that the human body brings to the bed net, and can prevent and disperse the soft material into the bed net due to pressure. Generation Brown : Environmentally friendly material that comes directly from nature, has strong water absorption and good air permeability. Knitted fiber cotton, sponge : to ensure that the entire mattress is soft and comfortable, and has a warm effect. Other fillers : such as fiber cotton, wool, etc., mainly to increase the three-dimensional feel and warmth of the mattress. 
3 Fabrics The fabrics of good mattresses nowadays are made of imported cotton fabrics. During the weaving process, anti-mite treatment is added, which can kill and inhibit the growth of mites. 
The above is the composition of the mattress, understand the composition and function of the mattress, pick out a good mattress no problem.
To choose a good mattress, you have to start from these three points
How to choose a good mattress? First of all, you have to understand it. Then what are their characteristics and how important are they? Let's find out together!