E0 ≤ 5mg/100g

E 1≤9 mg/100 g (generally the index of environmental protection board).

E2 ≤ 30mg/ 100g reinforced composite, solid wood composite and solid wood floor.

1. Let's talk about laminate flooring first: its advantage is cheap and wear-resistant, and other advantages are few, so it is more suitable for public places (such as shopping malls). For floor heating, it is even worse. Why? The reinforced composite material is made of density board, which is made of wood powder and glue. Air tightness, poor foot feeling, waterproof and moisture-proof, and high formaldehyde emission. The surface is decorative wood grain paper, because it is coated with alumina wear-resistant layer, which has good wear resistance. The test report of laminate flooring says that the formaldehyde emission is low, and some floors say that it is only 0.1mg/L. I personally doubt this value. After installing the floor, we should know that the problems are mainly in the following aspects: ① bulging, ② deformation, ③ cracking and so on. The reinforced floor is very waterproof and moisture-proof, so it must be moisture-proof when installing. So he must install moisture-proof plastic sheets and PE mats to prevent moisture. In addition, laminate flooring basically has no advantages of natural wood flooring: sound absorption, antibacterial, and rich in Fanduo essence. Personally, I am opposed to using laminate flooring as geothermal floor in the living room. In the case of floor heating, the reinforced floor is prone to problems such as bulging and deformation. There are many brands of laminate flooring in China, but few brands really own production lines, and most of them are OEM. I don't need to stick bricks. I also borrowed money to lay solid wood composite floors.

2. Solid wood flooring: The advantage of solid wood flooring is good environmental protection, but the disadvantage is that it is troublesome to maintain, delicate and easy to deform, and cannot be used for geothermal energy. Due to the limitation of resources, solid wood flooring will eventually withdraw from the market.

3. Solid wood composite flooring: heating in Korea and Japan is very developed, and most residents spread solid wood composite flooring. I knew nothing about the floor at first. Later, through research, I found that solid wood composite floor is the best choice. The reasons are as follows: We all know that in addition to the advantages of solid wood flooring, solid wood flooring also has the advantages that solid wood flooring lacks, such as not easy to deform, easy to maintain and not delicate. : ① The base plate of solid wood composite floor is mostly willow amine, which is breathable and comfortable; (2) less glue consumption and good environmental protection; (3) The surface layer is made of solid wood sheets, which looks good and the price is generally lower than that of similar solid wood floors; ④ Generally coated with UV paint and partially coated with ceramic paint, which has good wear resistance, but not as good as reinforced composite; (5) Not effeminate, easy to take care of. Good moisture resistance, because its substrate is criss-crossing willow amine wood, eliminating the internal stress of wood. Similarly, there are many brands of solid wood composite flooring, but few brands have their own production lines, which are also produced by OEM.

Note: the harder the floor, the better, because the harder the texture, the worse the foot feeling, and the advantages of sound absorption and moisture resistance of wood itself are lost. Some merchants often use some metal objects to carve the floor so as not to damage it. This is just a gimmick of business promotion. We know the simplest truth: wood must be afraid of iron scraping (the molecular structure of the two is different), and the floor that is not afraid of iron scraping is not necessarily pure wood products. I hope everyone will not be misled by the advertisements of the merchants. You know, according to the statistics of floor complaints, there are 100 complaints, because there is not even a problem of wear resistance. It's simple ... who comes to their house and wears high heels? Or hit your own floor with a hard metal object? . So the real problems of the floor are cracking, deformation and so on.