1. Efficiently control dust and improve the working environment from the source. 2. Form an enclosed space at material transfer points (such as discharge ports) to reduce the flying loss of light materials. 3. Realize regional isolation to maintain different humidity and temperature levels. 4. High flexibility and impact resistance, unlikely to damage vehicles or equipment. 5. The cost is much lower than that of rigid doors and complex dust removal systems, with easy installation and extremely low maintenance costs.