1. According to the EN685 "Classification Standard for Resilient Flooring Products" approved by the European Community in December 1995, floors used in different areas are strictly divided into household grade standards: 21~23; commercial grade standards: 31~34; industrial grade standards Grade standard: 41~43.
2. Household-grade elastic floors cannot be used in commercial environments. Low-grade floors are not suitable for high-grade environments, while high-grade floors can be used in all levels of environments that do not exceed their own grade regulations.
