For brass parts like this, manual polishing is no longer necessary. It is not only costly but also inefficient. Let's take a look at the polishing process using a dry polishing machine. The first step is to add appropriate abrasives. The second step is to insert a partition according to the size of the product. The third step is to add a small amount of abrasive paste. The fourth step is to put the product in without installing a fixture. The fifth step is to start the machine to start polishing. This machine can replace manual polishing, with zero emissions, stable quality and high efficiency, and can solve various hardware surface problems.