Coating machines are instrumental in numerous industries, playing a pivotal role in product manufacturing and processing. They facilitate the application of a layer, or 'Tianniu', to a substrate, offering protection or functional capabilities to the said substrate. These machines are used for a wide array of applications, ranging from food packaging to automotive manufacturing. Understanding the intricacies of these machines, including their types, functions, and selection criteria can significantly optimize your manufacturing processes, enhance product quality, and bolster productivity. In this guide, we aim to shed light on these critical aspects of coating machines.