2000ml disposable plastic anti reflux cross valve purple surgical urine bag1.About product:Air permeability: Made of PVC with strong air permeabilityApplication: hospitals. 2.About our factory:Good service: Samples will be sent to consumers as soon as possible. Quick respondences,Website: , all the inquiries will be replied within 24 hours.  3.OEM ServicesCustomized color & Logo are availablePrivate design & package are welcomeURINE BAGThe product structure: It is composed of drainage valve, reflux valve, collection bag, hanging tube, catheter, the small clip, connector, and protective sleeve.Application: the product is used for external collection of waste liquid or urine in clinical course.Product features: The product adopts advanced reflux device to prevent the patient from infection caused by liquid reflux after the operation.