Types of roller coating machines: 1. Classification by the number of coating rollers · Single-roll coating machine · Double-roll coating machine · Multi-roll coating machine (including three-roller, four-roller, etc.) 2. Classification by applicable substrate · Roll coating machine for MDF board · Roll coating machine for glass coating · Roll coating machine for solid wood board and plywood 3. Classification by coating material · Roll coating machine for UV coating · Paint coating machine such as PU and PE · Roll coating machine for water-based coating 4. Classification by structural form · Top coating roll coating machine · Bottom coating roll coating machine · Top and bottom double-sided coating machine