Whether the plate is good or not depends mainly on the level of environmental protection. Good dishes have a good home environment. The selected plate should be environmentally friendly, and the formaldehyde emission must be within the national standard. The plate marked with E 1 grade is a national environmental protection standard, and the average formaldehyde emission is less than 1.5 mg/L, which is more reassuring. Easy home board is E0 grade, which is lower than the national standard. Whole house customization is the future trend, and we have it.