{"id":1253,"count":8,"description":"Leather. Determination of the extension and tensile strength of the surface (ball method).\r\nThese International Standards specify a test method for the determination of the extension and the\r\nresistance of the grain or finished surface of the leather. This method applies to all supple skins and is\r\nespecially suitable for determining the suitability of leather for shoe uppers to be assembled.","link":"https:\/\/techlabsystems.com\/eng\/norma-en\/1-2-3\/en-3379\/","name":"EN 3379","slug":"en-3379","taxonomy":"en","parent":1009,"meta":[],"acf":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.9 - aioseo.com -->\n\t<meta name=\"description\" content=\"Leather. Determination of the extension and tensile strength of the surface (ball method). These International Standards specify a test method for the determination of the extension and the resistance of the grain or finished surface of the leather. 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