How To Recognize Genuine Cow Leather Belt Profile Visual Inspection The Profile of top grain cow leather belt is a whole with 3~4 mm thickness,without any lamination and other material inside ,while Poor/PU leather belt always made of several different material floor. Water Absorb Test Top grain cow leather has irregular skin pores,which can easily absorb water,while poor leather and PU can not. Tensile Test The toughness of top grain cow leather is very good, which can not break even tear and fold it strongly. Burning Test The top grain cow leather is rich in protein,which will produce white smoke and smell of burning hair ,its embers can be ground to powder easily.
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