<P>Formaldehyde emission is one of the most important criteria for measuring the environmental protection of wood flooring. In fact,architectural wall panel the wood itself contains aldehydes, but the content is minimal. Wood formaldehyde in the floor of the release depends mainly on the production of the floor used in the adhesive performance and production process, and the thickness of the floor has nothing to do.</P>
<P>In China, usually we are exposed to the E-class standards. In the national standard "plywood" (GB / T9846.1-9846.8-2004), the formaldehyde limit level is divided into E0, E1, E2 three levels. Among them, E1 is a mandatory standard, that is, the floor of the formaldehyde emission capacity of 1.5mg / L,labor cost install composite deck can be used directly in the room without causing health damage to the human body. And E0 is the recommended standard, that is consistent with formaldehyde emission capacity of 0.5mg / L of the floor, the higher the degree of environmental health.</P>
<P>In Japan, its F-class standard is more stringent, established in 2003, the standard in 10 years to enhance the 7 times the most advanced F4 star formaldehyde emission volume of 0.3mg / L,plastic farm fencing while the F3 star and the domestic E0 standard The same value.</P>