According to the China Raised flooring systems

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According to the China Green Home Environmental Technical Working Committee Executive Director Lihong Fan, the current level of national standards for environmental protection many detection methods are not consistent with the level of division, resulting in the manufacture of products enterprises on the lower, not higher, propaganda on the high not to low phenomenon. If the laminate flooring, GB18580-2001 specifies the E1 class, GB18102-2007 provides the E1 class and E0 class, both of which do not conflict, but provides a different level of laminate flooring.