We tested it—see the highlights and what to expect in real operation. Join us for an exclusive walkthrough of Shandong Longchang Duohui Machinery's 6m Double Drum Black Bean Roasting Production Line in action. Discover how this professional food processing solution handles continuous roasting, from raw beans to perfectly roasted output. See the engineering excellence, automated cooling process, and learn why this system serves industries from oilseed crops to traditional Chinese medicine with reliable, high-quality results.