The height of the entrance door and the floor of the living room

If it is an outward opening door, it can be higher than the floor of the entrance door.

Not necessarily, look at the design drawings of the type of screen, the overall picture before the decoration... The aisle height is also considered.

There is no effect, there is no problem above 35mm. There is no mandatory requirement in this regard, and it is appropriate to use 50mm height normally.

If it's for the sake of looking good, don't pretend;

If it's for privacy. >>>More

Beneficial home formaldehyde-free health board. Whether the plate is good or not mainly depends on the environmental protection level. Good plate to have a good home environment, the choice of plate to be environmentally friendly, formaldehyde release must be within the national standard, there is an E1 level logo is the national environmental protection standard, the average amount of formaldehyde emission is less than milligram liters of the plate. >>>More