Impregnated paper laminated wood floor that is, strengthening the floor, the new standard stipulates that formaldehyde emission less than or equal to 0.5 mg / l to the strengthening brass fitting  of the floor as E0-class products. According to strengthen the floor past the number of formaldehyde emissions can be divided into E2, E1 levels. Prior to the implementation of the new standards, many floors are often formaldehyde content of less than 1 mg / L (E1 class) collectively referred to as the E0 class, now have clearly defined, when consumers buy and safeguard their rights will be "evidence-based . " Wear-resistant to the surface in several areas, the new standards for household level from the original is greater than or equal to 6000, adjusted for household level is greater than or equal to 6000, two is greater than or equal to 4000. New standards for wear-resistant to several segments and planning, emphasized the practicality. Compared with the old standard, the new national standard in the main fire power, flameout protection, environmental provisions and burner expected, the number of inspection rules brass fitting  were amended, some of Zaoju product safety and technical parameters before the standards are significantly more Increase, even higher than that of some developed European and American standards. The new "a" national standard since May 1, 2008 shall come into operation, all enterprises must be in accordance with the new standard production gas stove. May 1, 2008 to December 31, 2008 as a buffer period of adjustment, May 1, 2008 production of the old standard gas stove, still on the brass fitting  market. Since January 1, 2009, the old standards may not sell gas stoves, gas stoves available on the market to meet the new standards.  brass ball valve