Metal fasteners used in leather goods may show a change in the metal finish due to chemical agents applied to the leather that are not properly washed or neutralised. Chemicals used in the dyeing and bleaching of garments may cause a change in the colour of the metal elements of the fastener or lead to a colour migration issue. Metal fasteners subjected to severe denim washing (enzyme and stone washing) may be affected by chemical and physical abrasion. Before proceeding to production, it is recommended that you conduct production tests and trials for all uses / applications of fasteners to verify that the product meets the requirements of the end customer as well as the demands of internal processing conditions. Rubí Industria de Cremalleras supports customers with advice on individual applications upon request. If you have any questions or concerns, please do not hesitate to contact us.