Both W490 and W435 are topcoat polishes and paint protection products, but their main differences lie in the application methods and durability:
W490: This product is applied with a machine, allowing it to penetrate the surface more deeply, resulting in higher durability. It is ideal for professional use and long-lasting results.
W435: This product is applied by hand, making it suitable for users without a machine. While it is easier to apply, its durability is lower compared to W490, which is applied with a machine.