Differentiate the superior with inferior of leather of natural leather upper?

Time：2018-11-8Read： 802

Leather upper material includes natural leather such as cow, pig and sheep, whose quality is like the index of fastness to folding and so on, which should be tested by instruments. When we buy shoes, we mainly see that the surface of leather upper should be smooth and meticulous, with uniform thickness, uniform color and no decolorization, and the coating layer should be firm, not loose and not cracked. Use hand to press the surface to appear only fine radioactivity furrow, after the hand loosens, restore instantly level off, had better have flexibility; On the contrary, after pressing out of the ink-stone mixed and disorderly uneven thickness of the wrinkles, the hand after loosening can not restore the formation of the poor.

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Differentiate the superior with inferior of leather of natural leather upper?