The production of major equipment for ventilation vacuuming.The device is extremely wear-resistant products,Website:://.chinaextruders.net, The use of copper wire can enhance strength hose, high pressure, vacuum and resistance to compression, superior product with high axial strength, so transporting material smooth, has good chemical resistance; The bending radius is approximately equal to three times the diameter, can discharge static electricity.structure: 1. Flexible copper wire coated in sturdy wall; 2. wall using a special top-polyether - polyurethane, about 0.6-0.9MM wall thickness; Than ordinary PVC hose, rubber tube wear high more than 10 times.Temperature range: about -30 ℃ to 90 ℃, short time up to 120 ℃