... to control pedestrian entering or exiting restricted areas, use SS304 stainless steel for the whole case, and adopt anti-damp, dust-proofing, ... volume control and fare collection function etc.1. Use SS304 stainless steel for the whole case, and adopt anti-damp, dust-proofing, ... , a high level of parts exchanging. 3. Use 2mm stainless steel for the whole case, durable and reliable, free distortion. 4. ...