Traditional Culture Encyclopedia - Hotel franchise - How about Perkin floor? What does e 1 mean?

How about Perkin floor? What does e 1 mean?

Not bad, one of the top ten brands.

E0, E 1, E2 all refer to an environmental protection standard of formaldehyde emission limit level, E2(≤5.0mg/L), E 1(≤ 1.5mg/L), E0(≤0.5mg/L),

E 1 is the minimum standard for plates to enter the environmental protection market stipulated by the state.

E2 is unqualified,

E0 is the top environmental protection standard.