... timber drying, there are four methods that are generally available (1) Freeze drying, (2) heat drying, (3) steam drying and (4) ‘air drying. Steam drying is the most commonly used method in Vietnam. ... method in Vietnam. In general, investments in wood and forest products processing equipment have been insufficient in Vietnam and innovation has fallen behind, especially in the Northern region. ... milling machines, tenon milling machines, multi-bullet drillers, polishing machines, lathes and drying- rooms. In recent years, most establishments have imported comprehensive assemblies and...