... vacuum timber dryerHigh vacuum timber dryer adopts high frequency drying, inside and outside of wood timber is heated at ... labor, automatic feeding and discharging. Built-in cooling system, lower the drying costAdvantages:High outturn percentage: it needs not to insert ... is no cracking, no distortion, no shrinkage in lower temperature drying process.Environmental protection: no boiler, no dust, no smog ...