1, medical institutions: check with local hospitals, clinics, or pharmacies that provide oxygen supply services or can recommend related businesses.
2. Oxygen supply companies: Check with local oxygen supply companies or gas suppliers, who usually provide sales and rental services of oxygen equipment and cylinders. Relevant contact information can be obtained by phone or online search.
3, suggest asking local residents: talk to local residents and ask where to buy oxygen locally, they will give some suggestions and guidance. Oxygen is a single substance formed by the element oxygen, with the chemical formula O2, which is chemically more active and reacts with most of the elements with oxygen.