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Multi-tower continuous vacuum distillation technology is the separation of the high boiling point, multi-component and heat-sensitive organic mixture of state-of-the-art technology in the chemical industry. The separation and purification devices for systems engineering, high performance sealing and high vacuum degree, the falling film evaporation technology, the efficiency of low pressure drop packing and stable operating system makes it suitable for large-scale industrial production. In comparison with similar technology from abroad, it has investment potential, a short construction period, excellent quality and features, with significant economic benefits. Its technology is widely used in the separation of vegetable oil fatty acids, natural vitamin E, concentrated distillation dimer acid, as well as special lubricants for isolation and purification.