First you need to carefully examine the surface of the canvas as thoroughly as possible. Low -quality door distinguishes the presence of interspersed, tubercles, various microscopic garbage. Violations of technology during production can be very simple to determine. To do this, you need to run through the door with your hand, if roughness and unpleasant sensation are felt, you can safely bypass it. When pressed with a fingernail on the canvas, the varnish of a poor -quality door is very easy to peel off or there will be a trace. On the site you can buy corner leather modular sofas at competitive prices.