where to buy liquid oxygen

{"cid":"91215259","title":"Factory direct sale an cylinders gas liquid tank portable medical buy used 10l oxygen cylinder for diving","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/71\/4d\/0e33d4603a18df31b2ebf8609acd-200x200-1.jpg","attrs":{"Price":"$89.00\/pieces 10-99 pieces","Brand Name":"Saferlife","Model Number":"OXY10LS","Minimum Order Quantity":"10 pieces","Pressure":"High","Place of Origin":"Guangdong, China","Material":"Steel","Use":"Medical Gas","Marerial":"Alloy steel","Test Pressure":"22.5MPa","Working Pressure":"15MPa","Water Capacity":"10L","Certification":"CE","Weight":"12KG","Port":"Guangzhou","Supply Ability":"10000 Roll\/Rolls per Month"}}