If there is a design for product assembly of genuine leather products
and metal logo, please notice that the leather will corrode the metal by releasing acid and cause color change. If the leather is the PU leather, then no need to worry about it. But if the lacquer hasn't been dried completely when assembling the metal products and the leather trim together, for the lack of the air, the leather would get foggy and cause the metal color changing. Therefore, it is generally recommended that metal products should be protected by lacquer painting.