Venturi mask

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{"cid":"238069","pid":"33346942","pimg_url":"\/\/img1.b2bforus.com\/6c\/7d\/36d19b9cfda2\/product\/128007209_s-w400xh400.jpg","name":"Adjustable Medical Grade PVC Multi-duct Venturi Mask Oxygen Concentration Range 24%~50% Multi-duct Venturi Mask","attrs":{"Price":"Negotiable","MOQ":"5000.0 units","Delivery Time":"Negotiable","Brand":"Runmai or OEM"}}

{"cid":"238069","pid":"33346937","pimg_url":"\/\/img1.b2bforus.com\/6c\/7d\/36d19b9cfda2\/product\/128007191_s-w400xh400.jpg","name":"Factory Direct Selling Medical Grade PVC\/PP\/PE\/ABS Adjustable Oxygen Concentration With 7 Adjusters Fixed Venturi Mask","attrs":{"Price":"Negotiable","MOQ":"100.0 units","Delivery Time":"Negotiable","Brand":"Runmai Brand or OEM"}}