Invisible PC Case BlackDESCRIPTION About Invisible printing revealed by applying heat processing In the dyeing process of leather, chrome dyed (as it is a chemical dye, it is does not get discoloured easily) and vegetable dyeing (this dyeing method is used to produce a leather texture by using a dye close to nature which is used in a lot of tannings) was used, but you can not achieve invisible processing unless you use leather that was spray dyed on nume leather surface